spring+springjdbc集成之springjdbc泛型封装

集成spring jdbc，及jdbc泛型封装

创建表SQL

-- 表 test.t_role 结构
CREATE TABLE IF NOT EXISTS `t_role` (
  `id` int(11) NOT NULL AUTO_INCREMENT,
  `name` char(50) COLLATE utf8_unicode_ci NOT NULL,
  `remark` char(250) COLLATE utf8_unicode_ci DEFAULT NULL,
  `create_time` date NOT NULL,
  PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci;

-- 表 test.t_user 结构
CREATE TABLE IF NOT EXISTS `t_user` (
  `id` int(11) NOT NULL AUTO_INCREMENT,
  `name` char(50) CHARACTER SET utf8 NOT NULL,
  `age` int(11) NOT NULL DEFAULT '0',
  `email` varchar(150) CHARACTER SET utf8 DEFAULT NULL,
  `phone` char(15) CHARACTER SET utf8 NOT NULL,
  `create_time` date NOT NULL,
  `address` varchar(250) COLLATE utf8_unicode_ci DEFAULT NULL,
  PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci;

-- 表 test.t_user_role 结构
CREATE TABLE IF NOT EXISTS `t_user_role` (
  `role_id` int(11) NOT NULL,
  `user_id` int(11) NOT NULL,
  PRIMARY KEY (`role_id`,`user_id`),
  KEY `FK_t_user_role_t_user` (`user_id`),
  CONSTRAINT `FK_t_user_role_t_role` FOREIGN KEY (`role_id`) REFERENCES `t_role` (`id`),
  CONSTRAINT `FK_t_user_role_t_user` FOREIGN KEY (`user_id`) REFERENCES `t_user` (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci;

基于Maven搭建项目

1.配置pom.xml

<properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    
    <spring.version>4.1.9.RELEASE</spring.version>
  <aspectj.version>1.8.6</aspectj.version>
  <jackson.version>2.6.4</jackson.version>
  </properties>
  
  <dependencies>
  <dependency>
 <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>4.10</version>
      <scope>test</scope>
  </dependency>
 
  <dependency>
<groupId>org.apache.tomcat</groupId>
<artifactId>tomcat-servlet-api</artifactId>
<version>8.0.30</version>
<scope>provided</scope><!--打包时不包含进去-->
</dependency>
<dependency>
<groupId>javax.servlet.jsp</groupId>
<artifactId>jsp-api</artifactId>
<version>2.2</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>1.2.16</version>
</dependency>
<dependency>
 <groupId>mysql</groupId>
 <artifactId>mysql-connector-java</artifactId>
 <version>5.1.34</version>
</dependency>
<dependency>
<groupId>com.google.code.gson</groupId>
<artifactId>gson</artifactId>
<version>2.5</version>
</dependency>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-lang3</artifactId>
<version>3.1</version>
</dependency>
<dependency><!-- 带反射机制 -->
 <groupId>commons-beanutils</groupId>
 <artifactId>commons-beanutils-core</artifactId>
 <version>1.8.3</version>
</dependency>
<!-- 以下是Spring所需包-->
    <dependency>
 <groupId>org.springframework</groupId>
 <artifactId>spring-core</artifactId>
 <version>${spring.version}</version>
</dependency>
<dependency>
 <groupId>org.springframework</groupId>
 <artifactId>spring-beans</artifactId>
 <version>${spring.version}</version>
</dependency>
<dependency>
 <groupId>org.springframework</groupId>
 <artifactId>spring-context</artifactId>
 <version>${spring.version}</version>
</dependency>
<dependency>
 <groupId>org.springframework</groupId>
 <artifactId>spring-web</artifactId>
 <version>${spring.version}</version>
</dependency>
    
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-tx</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-orm</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
 <groupId>org.springframework</groupId>
 <artifactId>spring-webmvc</artifactId>
 <version>${spring.version}</version>
</dependency>
<dependency>
 <groupId>org.springframework</groupId>
 <artifactId>spring-context-support</artifactId>
 <version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjrt</artifactId>
<version>${aspectj.version}</version>
</dependency>
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjweaver</artifactId>
<version>${aspectj.version}</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-log4j12</artifactId>
<version>1.7.13</version>
</dependency>
<dependency>
<groupId>org.glassfish</groupId>
<artifactId>javax.annotation</artifactId>
<version>3.1</version>
</dependency>
<dependency>
 <groupId>cglib</groupId>
 <artifactId>cglib-nodep</artifactId>
 <version>3.1</version>
</dependency>
<dependency>
 <groupId>commons-dbcp</groupId>
 <artifactId>commons-dbcp</artifactId>
 <version>1.4</version>
</dependency>
<dependency>
 <groupId>org.freemarker</groupId>
 <artifactId>freemarker</artifactId>
 <version>2.3.22</version>
</dependency>
<dependency>
        <groupId>commons-io</groupId>
        <artifactId>commons-io</artifactId>
        <version>2.4</version>
    </dependency>

    <dependency>
        <groupId>commons-fileupload</groupId>
        <artifactId>commons-fileupload</artifactId>
        <version>1.3.1</version>
    </dependency>

<!-- Bonecp连接池 -->
    <dependency>
        <groupId>com.jolbox</groupId>
        <artifactId>bonecp</artifactId>
        <version>0.8.0.RELEASE</version>
    </dependency>
    
    <dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-core</artifactId>
<version>${jackson.version}</version>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>${jackson.version}</version>
</dependency>

    <dependency>
        <groupId>org.json</groupId>
        <artifactId>org.json</artifactId>
        <version>chargebee-1.0</version>
    </dependency>
    
    <dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency>
  </dependencies>

<build>
      <finalName>sssj-web</finalName>
      <plugins>
          <!-- <plugin>
              <groupId>org.mortbay.jetty</groupId>
              <artifactId>maven-jetty-plugin</artifactId>
              <version>6.1.26</version>
              <configuration>
                  设置扫描target/classes内部文件变化时间间隔
                  <scanIntervalSeconds>10</scanIntervalSeconds>
                  <connectors>
                      <connector implementation="org.mortbay.jetty.nio.SelectChannelConnector">
                          <port>8888</port>
                      </connector>
                  </connectors>
                  <webApp>
                      <contextPath>/</contextPath>
                  </webApp>
              </configuration>
          </plugin> -->
          
          <plugin>
              <groupId>org.apache.tomcat.maven</groupId>
              <artifactId>tomcat7-maven-plugin</artifactId>
              <version>2.1</version>
              <configuration>
                  <port>8888</port>
                  <path>/</path>
                  <uriEncoding>UTF-8</uriEncoding>
                  <finalName>sssj</finalName>
                  <server>tomcat7</server>
              </configuration>
          </plugin>
      </plugins>
  </build>

有些jar是多余的，可根据项目需求进行修改。

2.配置bean.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
               xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
               xmlns:aop="http://www.springframework.org/schema/aop"
               xmlns:tx="http://www.springframework.org/schema/tx"
               xmlns:context="http://www.springframework.org/schema/context"
               xmlns:p="http://www.springframework.org/schema/p"  
               xmlns:cache="http://www.springframework.org/schema/cache"
               xsi:schemaLocation="
                    http://www.springframework.org/schema/beans
                    http://www.springframework.org/schema/beans/spring-beans-4.1.xsd
                    http://www.springframework.org/schema/tx 
                    http://www.springframework.org/schema/tx/spring-tx-4.1.xsd
                    http://www.springframework.org/schema/aop 
                    http://www.springframework.org/schema/aop/spring-aop-4.1.xsd
                    http://www.springframework.org/schema/context      
                    http://www.springframework.org/schema/context/spring-context-4.1.xsd 
                    http://www.springframework.org/schema/cache 
                    http://www.springframework.org/schema/cache/spring-cache-4.1.xsd">

	<!-- 注解支持 -->
	<context:annotation-config />
	<context:component-scan base-package="com.huhui">
		<context:exclude-filter type="regex"
			expression="com.huhui.web*" />
	</context:component-scan>

	<!-- 属性文件位置 -->
	<bean id="propertiesConfig" class="com.huhui.common.EncryptPropertyPlaceholderConfigurer">
		<property name="locations">
			<list>
				<value>classpath:jdbc.properties</value>
			</list>
		</property>
	</bean>

	<!-- 国际化支持 -->
	<bean id="messageSource"
		class="org.springframework.context.support.ResourceBundleMessageSource">
		<property name="basenames">
			<list>
				<value>messages</value>
			</list>
		</property>
		<property name="defaultEncoding" value="utf8" />
	</bean>

	<!-- 数据源 -->
	<bean id="dataSource" class="com.jolbox.bonecp.BoneCPDataSource" destroy-method="close">
		<property name="driverClass" value="${jdbc.driverClassName}" />
		<property name="jdbcUrl" value="${jdbc.url}" />
		<property name="username" value="${jdbc.username}" />
		<property name="password" value="${jdbc.password}" />
		<property name="idleConnectionTestPeriod" value="${BoneCP.idleConnectionTestPeriod}" />
		<property name="idleMaxAge" value="${BoneCP.idleMaxAge}" />
		<property name="maxConnectionsPerPartition" value="${BoneCP.maxConnectionsPerPartition}" />
		<property name="minConnectionsPerPartition" value="${BoneCP.minConnectionsPerPartition}" />
		<property name="partitionCount" value="${BoneCP.partitionCount}" />
		<property name="acquireIncrement" value="${BoneCP.acquireIncrement}" />
		<property name="statementsCacheSize" value="${BoneCP.statementsCacheSize}" />
		<property name="releaseHelperThreads" value="${BoneCP.releaseHelperThreads}" />
	</bean>

	<!-- 配置Jdbc模板 -->
	<bean id="jdbcTemplate" class="org.springframework.jdbc.core.JdbcTemplate">
		<property name="dataSource" ref="dataSource"></property>
	</bean>
	
	<!-- 配置事务管理器 -->
	<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"
		p:dataSource-ref="dataSource" />
    <!-- 采用注解的方式配置事务 -->
    <tx:annotation-driven transaction-manager="transactionManager"/>
    
</beans>

jdbc.properties

jdbc.driverClassName=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/test?useUnicode=true&amp;characterEncoding=UTF-8
jdbc.username=8WN5qsYFsGc=
jdbc.password=DyyHAFCE34NOmJs5+WzviA==

##===============BoneCP配置==============##
#检查数据库连接池中空闲连接的间隔时间，单位是分，默认值：240，如果要取消则设置为0#
BoneCP.idleConnectionTestPeriod=30
#连接池中未使用的链接最大存活时间，单位是分，默认值：60，如果要永远存活设置为0# 
BoneCP.idleMaxAge=10
#每个分区最大的连接数#  
BoneCP.maxConnectionsPerPartition=3
#每个分区最小的连接数#  
BoneCP.minConnectionsPerPartition=1
#分区数 ，默认值2，最小1，推荐3-4，视应用而定#  
BoneCP.partitionCount=2
#每次去拿数据库连接的时候一次性要拿几个,默认值：2#  
BoneCP.acquireIncrement=1
#缓存prepared statements的大小，默认值：0#  
BoneCP.statementsCacheSize=0 
#每个分区释放链接助理进程的数量，默认值：3，除非你的一个数据库连接的时间内做了很多工作，不然过多的助理进程会影响你的性能#  
BoneCP.releaseHelperThreads=3

EncryptPropertyPlaceholderConfigurer.java

package com.huhui.common;

import org.springframework.beans.factory.config.PropertyPlaceholderConfigurer;

public class EncryptPropertyPlaceholderConfigurer extends PropertyPlaceholderConfigurer {
private String[] encryptPropNames = { "jdbc.username", "jdbc.password" };

@Override
protected String convertProperty(String propertyName, String propertyValue) {
// 如果在加密属性名单中发现该属性
if (isEncryptProp(propertyName)) {
String decryptValue ="";
try {
decryptValue = Des3Util.decryptMode(propertyValue);
} catch (Exception e) {
e.printStackTrace();
}
return decryptValue;
} else {
return propertyValue;
}

}

private boolean isEncryptProp(String propertyName) {
for (String encryptName : encryptPropNames) {
if (encryptName.equals(propertyName)) {
return true;
}
}
return false;
}

}

package com.huhui.common;

import javax.crypto.Cipher;
import javax.crypto.SecretKey;
import javax.crypto.spec.SecretKeySpec;

import sun.misc.BASE64Decoder;
import sun.misc.BASE64Encoder;

public class Des3Util {

private static final String Algorithm = "DESede"; // 定义 加密算法,可用DES,DESede,Blowfish
private static final byte[] key = ***;//24字节key

/**
* 加密
* @param keybyte 加密密钥，长度为24字节
* @param src 数据缓冲区（源）
* @return
*/
public static byte[] encryptMode(byte[] keybyte, byte[] src) {
try {
// 生成密钥
SecretKey deskey = new SecretKeySpec(keybyte, Algorithm);
// 加密
Cipher c1 = Cipher.getInstance(Algorithm);
c1.init(Cipher.ENCRYPT_MODE, deskey);
return c1.doFinal(src);
} catch (java.security.NoSuchAlgorithmException e1) {
e1.printStackTrace();
} catch (javax.crypto.NoSuchPaddingException e2) {
e2.printStackTrace();
} catch (java.lang.Exception e3) {
e3.printStackTrace();
}
return null;
}
/**
* 加密
* @param src
* @return
*/
public static String encryptMode(String src){
try {
// 生成密钥
SecretKey deskey = new SecretKeySpec(key, Algorithm);
// 加密
Cipher c1 = Cipher.getInstance(Algorithm);
c1.init(Cipher.ENCRYPT_MODE, deskey);
BASE64Encoder enc=new BASE64Encoder();
return enc.encodeBuffer(c1.doFinal(src.getBytes()));
} catch (java.security.NoSuchAlgorithmException e1) {
e1.printStackTrace();
} catch (javax.crypto.NoSuchPaddingException e2) {
e2.printStackTrace();
} catch (java.lang.Exception e3) {
e3.printStackTrace();
}
return null;
}

/**
* 解密
* @param keybyte 加密密钥，长度为24字节
* @param src 数据缓冲区（源）
* @return
*/
public static byte[] decryptMode(byte[] keybyte, byte[] src) {
try {
// 生成密钥
SecretKey deskey = new SecretKeySpec(keybyte, Algorithm);
// 解密
Cipher c1 = Cipher.getInstance(Algorithm);
c1.init(Cipher.DECRYPT_MODE, deskey);
return c1.doFinal(src);
} catch (java.security.NoSuchAlgorithmException e1) {
e1.printStackTrace();
} catch (javax.crypto.NoSuchPaddingException e2) {
e2.printStackTrace();
} catch (java.lang.Exception e3) {
e3.printStackTrace();
}
return null;
}
/**
* 解密
* @param src
* @return
*/
public static String decryptMode(String src){
try {
// 生成密钥
SecretKey deskey = new SecretKeySpec(key, Algorithm);
// 解密
Cipher c1 = Cipher.getInstance(Algorithm);
c1.init(Cipher.DECRYPT_MODE, deskey);
BASE64Decoder dec = new BASE64Decoder();
return new String(c1.doFinal(dec.decodeBuffer(src)));
} catch (java.security.NoSuchAlgorithmException e1) {
e1.printStackTrace();
} catch (javax.crypto.NoSuchPaddingException e2) {
e2.printStackTrace();
} catch (java.lang.Exception e3) {
e3.printStackTrace();
}
return null;
}

}

3.配置web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" id="WebApp_ID" version="3.0">
  <context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>classpath*:beans*.xml</param-value>
  </context-param>
  
  <!-- 通过listener对Spring容器进行实例化 -->
  <listener>
    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
  </listener>
  
  <!-- Freemarker引用其它的标签库 -->
  <listener>
<listener-class>freemarker.ext.jsp.EventForwarding</listener-class>
  </listener>
  
  <!-- 处理字符编码，解决中文乱码问题 -->
  <filter>
  <filter-name>CharacterEncodingFilter</filter-name>
  <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
  <init-param>
  <param-name>encoding</param-name>
  <param-value>UTF-8</param-value>
  </init-param>
  </filter>
  <filter-mapping>
  <filter-name>CharacterEncodingFilter</filter-name>
  <url-pattern>/*</url-pattern>
  </filter-mapping>
  
  <session-config>
  <session-timeout>30</session-timeout>
  </session-config>
</web-app>

4.DAO封装代码实现

package com.huhui.dao;

import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;

import org.springframework.jdbc.core.RowMapper;

public interface BaseDao {
	
	/**
	 * 插入/更新/删除数据
	 * @param sql
	 * @param params
	 */
	public void operate(String sql, Object[] params);
	
	/**
	 * 增加表数据
	 * @param tableName 表名
	 * @param map key为表字段名，value为该字段值，例：map.put("field1", "test");
	 */
	public void save(String tableName, Map<String, Object> map);
	
	/**
	 * 增加表数据
	 * @param tableName 表名
	 * @param map key为表字段名，value为该字段值，例：map.put("field1", "test");
	 * @return 返回自增ID值
	 */
	public int saveReAutoId(String tableName, Map<String, Object> map);
	
	/**
	 * 批量增加表数据
	 * @param tableName 表名
	 * @param fields 要增加的字段集，例：{field1,field2,...}
	 * @param list 数据集，map key为表字段名，value为该字段值，例：map.put("field1", "test");
	 */
	public void saveBatch(String tableName, final String[] fields, final List<Map<String, Object>> list);
	
	/**
	 * 修改表数据
	 * @param tableName 表名
	 * @param map 要修改的数据集，key为表字段名，value为该字段值，例：map.put("field1", "test");
	 * @param whereMap 过滤条件集，key为表字段名和判断符，value为该字段值，例：map.put("field1 = ", "test");
	 */
	public void update(String tableName, Map<String, Object> map, LinkedHashMap<String, Object> whereMap);
	
	/**
	 * 批量修改表数据
	 * @param tableName 表名
	 * @param fields 要修改的字段集，例：{field1,field2,...}
	 * @param whereFields 过滤条件字段集，key为表字段名，value为判断符，例：map.put("field1", "=");
	 * @param list 数据集，map key为表字段名，value为该字段值，例：map.put("field1", "test");
	 */
	public void updateBatch(String tableName, String[] fields, LinkedHashMap<String, String> whereFields, final List<Map<String, Object>> list);
	
	/**
	 * 删除表数据
	 * @param tableName 表名
	 * @param id 参数id值
	 */
	public void delete(String tableName, int id);
	
	/**
	 * 批量删除表数据
	 * @param tableName 表名
	 * @param ids
	 */
	public void deleteBatch(String tableName, final Integer[] ids);
	
	/**
	 * 根据id查询表数据
	 * @param tableName 表名
	 * @param fields 查询结果字段集，例：{field1,field2,...}
	 * @param id 查询条件id值
	 * @param rowMapper 结果封装对象
	 * @return
	 */
	public <T> T findById(String tableName, String[] fields, int id, RowMapper<T> rowMapper);
	
	/**
	 * 根据id查询表数据
	 * @param tableName 表名
	 * @param field 查询结果字段(仅一个字段)
	 * @param id 查询条件id值
	 * @param clazz 结果对象类
	 * @return
	 */
	public <T> T findById(String tableName, String field, int id, Class<T> clazz);
	
	/**
	 * 查询数据（不分页）
	 * @param fields 查询结果字段集，例：{field1,field2,...}
	 * @param fromSql 
	 * @param maxresult 每页显示数（maxresult<=0时查询所有）
	 * @param where 
	 * @param params 
	 * @param groupby
	 * @param orderby
	 * @param rowMapper 结果封装对象
	 * @return
	 */
	public <T> List<T> findByList(String[] fields, String fromSql, int maxresult, String where,
			List<Object> params,String groupby,LinkedHashMap<String, String> orderby, RowMapper<T> rowMapper);
	
}

package com.huhui.dao;

import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;

import org.apache.commons.lang3.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.jdbc.core.BatchPreparedStatementSetter;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.jdbc.core.PreparedStatementCreator;
import org.springframework.jdbc.core.RowMapper;
import org.springframework.jdbc.support.GeneratedKeyHolder;
import org.springframework.jdbc.support.KeyHolder;
import org.springframework.transaction.annotation.Propagation;
import org.springframework.transaction.annotation.Transactional;

@Transactional(rollbackFor=Exception.class)
public class BaseDaoImpl implements BaseDao {
	
	@Autowired
	private JdbcTemplate jdbcTemplate;
	
	@Override
	public void operate(String sql, Object[] params) {
		jdbcTemplate.update(sql, params);
	}

	@Override
	public void save(String tableName, Map<String, Object> map) {
		List<Object> params = new ArrayList<Object>();
		StringBuffer sql = new StringBuffer("insert into ");
		sql.append(tableName).append("(");
		
		StringBuffer field = new StringBuffer();
		for(Entry<String, Object> entry:map.entrySet()){
			field.append(entry.getKey()).append(",");
			params.add(entry.getValue());
		}
		sql.append(field.deleteCharAt(field.length()-1));
		
		sql.append(") values (");
		
		StringBuffer fieldVal = new StringBuffer();
		for(int i=0,len=map.size();i<len;i++){
			fieldVal.append("?,");
		}
		sql.append(fieldVal.deleteCharAt(fieldVal.length()-1));
		
		sql.append(");");
		
		jdbcTemplate.update(sql.toString(), params.toArray());
	}
	
	@Override
	public int saveReAutoId(String tableName, Map<String, Object> map) {
		List<Object> params = new ArrayList<Object>();
		StringBuffer sql = new StringBuffer("insert into ");
		sql.append(tableName).append("(");
		
		StringBuffer field = new StringBuffer();
		for(Entry<String, Object> entry:map.entrySet()){
			field.append(entry.getKey()).append(",");
			params.add(entry.getValue());
		}
		sql.append(field.deleteCharAt(field.length()-1));
		
		sql.append(") values (");
		
		StringBuffer fieldVal = new StringBuffer();
		for(int i=0,len=map.size();i<len;i++){
			fieldVal.append("?,");
		}
		sql.append(fieldVal.deleteCharAt(fieldVal.length()-1)).append(");");
		
		final String sqlTemp = sql.toString();
		final List<Object> paramsTemp = params;
		KeyHolder keyHolder = new GeneratedKeyHolder();
		jdbcTemplate.update(new PreparedStatementCreator() {
			
			@Override
			public PreparedStatement createPreparedStatement(Connection con) throws SQLException {
				PreparedStatement ps = con.prepareStatement(sqlTemp, new String[]{"id"});
				for(int j=0,len=paramsTemp.size();j<len;j++){
					ps.setObject(j+1, paramsTemp.get(j));
				}
				return ps;
			}
		}, keyHolder);
		
		return keyHolder.getKey().intValue();
	}

	@Override
	public void saveBatch(String tableName, final String[] fields, final List<Map<String, Object>> list) {
		StringBuffer sql = new StringBuffer("insert into ");
		sql.append(tableName).append("(").append(buildFields(fields)).append(") values (");
		StringBuffer fieldVal = new StringBuffer();
		for(int i=0,len=fields.length;i<len;i++){
			fieldVal.append("?,");
		}
		sql.append(fieldVal.deleteCharAt(fieldVal.length()-1)).append(");");
		
		jdbcTemplate.batchUpdate(sql.toString(), new BatchPreparedStatementSetter() {
			
			@Override
			public void setValues(PreparedStatement ps, int i) throws SQLException {
				for(int j=0,len=fields.length;j<len;j++){
					ps.setObject(j+1, list.get(i).get(fields[j]));
				}
			}
			
			@Override
			public int getBatchSize() {
				return list.size();
			}
		});
	}

	@Override
	public void update(String tableName, Map<String, Object> map, LinkedHashMap<String, Object> whereMap) {
		List<Object> params = new ArrayList<Object>();
		StringBuffer sql = new StringBuffer("update ");
		sql.append(tableName).append(" set ");
		
		StringBuffer temp = new StringBuffer();
		for(Entry<String, Object> entry:map.entrySet()){
			temp.append(entry.getKey()).append("=").append("?,");
			params.add(entry.getValue());
		}
		sql.append(temp.deleteCharAt(temp.length()-1));
		if(whereMap!=null){
			sql.append(" where 1=1 ");
			for(Entry<String, Object> entry:whereMap.entrySet()){
				sql.append(" and ").append(entry.getKey()).append("?");
				params.add(entry.getValue());
			}
		}
		sql.append(";");
		
		jdbcTemplate.update(sql.toString(), params.toArray());
	}

	@Override
	public void updateBatch(String tableName, String[] fields, LinkedHashMap<String, String> whereFields, final List<Map<String, Object>> list) {
		StringBuffer sql = new StringBuffer("update ");
		sql.append(tableName).append(" set ");
		
		final List<String> paramKeys = new ArrayList<String>();
		StringBuffer temp = new StringBuffer();
		for(String ft:fields){
			temp.append(ft).append("=").append("?,");
			paramKeys.add(ft);
		}
		sql.append(temp.deleteCharAt(temp.length()-1));
		
		if(whereFields!=null){
			sql.append(" where 1=1 ");
			for(Entry<String, String> entry:whereFields.entrySet()){
				sql.append(" and ").append(entry.getKey()).append(" ").append(entry.getValue()).append(" ").append("?");
				paramKeys.add(entry.getKey());
			}
		}
		sql.append(";");
		
		jdbcTemplate.batchUpdate(sql.toString(), new BatchPreparedStatementSetter() {
			
			@Override
			public void setValues(PreparedStatement ps, int i) throws SQLException {
				for(int j=0,len=paramKeys.size();j<len;j++){
					ps.setObject(j+1, list.get(i).get(paramKeys.get(j)));
				}
			}
			
			@Override
			public int getBatchSize() {
				return list.size();
			}
		});
	}
	
	@Override
	public void delete(String tableName, int id) {
		StringBuffer sql = new StringBuffer("delete from ");
		sql.append(tableName).append(" where id=?;");
		jdbcTemplate.update(sql.toString(), new Object[]{id});
	}
	
	@Override
	public void deleteBatch(String tableName, final Integer[] ids) {
		StringBuffer sql = new StringBuffer("delete from ");
		sql.append(tableName).append(" where id=?;");
		jdbcTemplate.batchUpdate(sql.toString(), new BatchPreparedStatementSetter() {
			
			@Override
			public void setValues(PreparedStatement ps, int i) throws SQLException {
				ps.setInt(1, ids[i]);
			}
			
			@Override
			public int getBatchSize() {
				return ids.length;
			}
		});
	}

	@Transactional(readOnly = true, propagation = Propagation.NOT_SUPPORTED)
	@Override
	public <T> T findById(String tableName, String[] fields, int id, RowMapper<T> rowMapper) {
		StringBuffer sql = new StringBuffer("select ");
		sql.append(buildFields(fields)).append(" ").append("from ").append(tableName).append(" where id=? limit 1;");
		return jdbcTemplate.queryForObject(sql.toString(), new Object[]{id}, rowMapper);
	}

	@Transactional(readOnly = true, propagation = Propagation.NOT_SUPPORTED)
	@Override
	public <T> T findById(String tableName, String field, int id, Class<T> clazz) {
		StringBuffer sql = new StringBuffer("select ");
		sql.append(field).append(" ").append("from ").append(tableName).append(" where id=? limit 1;");
		return jdbcTemplate.queryForObject(sql.toString(), new Object[]{id}, clazz);
	}
	
	@Transactional(readOnly = true, propagation = Propagation.NOT_SUPPORTED)
	@Override
	public <T> List<T> findByList(String[] fields, String fromSql, int maxresult, String where, 
			List<Object> params, String groupby, LinkedHashMap<String, String> orderby, RowMapper<T> rowMapper) {
		StringBuffer sql = new StringBuffer("select ");
		sql.append(buildFields(fields)).append(" from ").append(fromSql)
			.append(StringUtils.isEmpty(where)?"":" where "+where).append(" ")
			.append(StringUtils.isEmpty(groupby)?"":groupby).append(buildOrderby(orderby));
		if(params==null) params = new ArrayList<Object>();
		if(maxresult>0){
			sql.append(" limit 1,?;");
			params.add(maxresult);
		}
		return jdbcTemplate.query(sql.toString(), params.toArray(), rowMapper);
	}
	
	/**
	 * 组装字段集
	 * @param fields
	 * @return field1,field2,...
	 */
	private StringBuffer buildFields(String[] fields) {
		StringBuffer fieldTemp = new StringBuffer();
		if(fields!=null && fields.length>0){
			for(String field:fields){
				fieldTemp.append(field).append(",");
			}
			fieldTemp.deleteCharAt(fieldTemp.length()-1);
		}
		return fieldTemp;
	}

	/**
	 * 组装order by语句
	 * @param orderby
	 * @return order by t1.field1 desc,t2.field2 asc
	 */
	private StringBuffer buildOrderby(LinkedHashMap<String, String> orderby){
		StringBuffer orderbyql=new StringBuffer();
		if(orderby!=null&&orderby.size()>0){
			orderbyql.append(" order by ");
			for(String key:orderby.keySet()){
				orderbyql.append(key).append(" ").append(orderby.get(key)).append(",");
			}
			orderbyql.deleteCharAt(orderbyql.length()-1);
		}
		return orderbyql;
	}

}

5.相应Service、Entity和Model代码实现

public interface UserService extends BaseDao {
	
}

@Service
public class UserServiceImpl extends BaseDaoImpl implements UserService {
	
}

public class UserEntity {

	private static final String t_tableNickname = "user";
	public static final String t_tableName = "t_user "+t_tableNickname;
	public static final String t_id = t_tableNickname+".id";
	public static final String t_name = t_tableNickname+".name";
	public static final String t_age = t_tableNickname+".age";
	public static final String t_email = t_tableNickname+".email";
	public static final String t_phone = t_tableNickname+".phone";
	public static final String t_createTime = t_tableNickname+".create_time";
	public static final String t_address = t_tableNickname+".address";

}

@SuppressWarnings("serial")
public class UserModel implements RowMapper<UserModel>, Serializable {
	
	private int id;
	private String name;
	private int age;
	private String email;
	private String phone;
	private Date createTime;
	private String address;
	
	private String[] fields;//查询结果字段集
	
	public UserModel() { }
	
	/**
	 * 查询结果集封装成对象
	 * @param fields 查询结果字段集
	 */
	public UserModel(String[] fields) {
		this.fields = fields;
	}


	public int getId() {
		return id;
	}
	public void setId(int id) {
		this.id = id;
	}
	public String getName() {
		return name;
	}
	public void setName(String name) {
		this.name = name;
	}
	public int getAge() {
		return age;
	}
	public void setAge(int age) {
		this.age = age;
	}
	public String getEmail() {
		return email;
	}
	public void setEmail(String email) {
		this.email = email;
	}
	public String getPhone() {
		return phone;
	}
	public void setPhone(String phone) {
		this.phone = phone;
	}
	public Date getCreateTime() {
		return createTime;
	}
	public void setCreateTime(Date createTime) {
		this.createTime = createTime;
	}
	public String getAddress() {
		return address;
	}
	public void setAddress(String address) {
		this.address = address;
	}

	public void setFields(String[] fields) {
		this.fields = fields;
	}

	@Override
	public UserModel mapRow(ResultSet rs, int rowNum) throws SQLException {
		UserModel user = new UserModel();
		if(fields!=null && fields.length>0){
			Map<String, String> map = new HashMap<String, String>();
			for(String f:fields){
				map.put(f, f);
			}
			
			if(StringUtils.isNotEmpty(map.get(UserEntity.t_id)))
				user.setId(rs.getInt(UserEntity.t_id));
			if(StringUtils.isNotEmpty(map.get(UserEntity.t_name)))
				user.setName(rs.getString(UserEntity.t_name));
			if(StringUtils.isNotEmpty(map.get(UserEntity.t_age)))
				user.setAge(rs.getInt(UserEntity.t_age));
			if(StringUtils.isNotEmpty(map.get(UserEntity.t_email)))
				user.setEmail(rs.getString(UserEntity.t_email));
			if(StringUtils.isNotEmpty(map.get(UserEntity.t_phone)))
				user.setPhone(rs.getString(UserEntity.t_phone));
			if(StringUtils.isNotEmpty(map.get(UserEntity.t_createTime)))
				user.setCreateTime(rs.getDate(UserEntity.t_createTime));
			if(StringUtils.isNotEmpty(map.get(UserEntity.t_address)))
				user.setAddress(rs.getString(UserEntity.t_address));
			
		}
		return user;
	}

}

分页代码的封装，可根据自己的分页模块，按照此思路进行封装。

6.测试

public class TestJdbc {
	
	private static ApplicationContext cxt;
	private static UserService userService;
	
	@BeforeClass
	public static void setUpBeforeClass() throws Exception {
		try {
			cxt=new ClassPathXmlApplicationContext("beans.xml");
			userService=(UserService) cxt.getBean("userServiceImpl");
		} catch (Exception e) {
			e.printStackTrace();
		}
	}
	
	@Test
	public void testSave() {
		Map<String, Object> map = new HashMap<String, Object>();
		map.put(UserEntity.t_age, 14);
		map.put(UserEntity.t_name, "新增字段测试2");
		map.put(UserEntity.t_createTime, new Date());
		map.put(UserEntity.t_phone, "1339482322");
		map.put(UserEntity.t_email, "[email protected]");
		map.put(UserEntity.t_address, "深圳某区");
		userService.save(UserEntity.t_tableName, map);
	}

	@Test
	public void testSaveBatch() {
		List<Map<String, Object>> list = new ArrayList<Map<String,Object>>();
		Map<String, Object> map = new HashMap<String, Object>();
		map.put(UserEntity.t_age, 14);
		map.put(UserEntity.t_name, "新增字段测试2");
		map.put(UserEntity.t_createTime, new Date());
		map.put(UserEntity.t_phone, "1339482322");
		map.put(UserEntity.t_email, "[email protected]");
		map.put(UserEntity.t_address, "深圳某区");
		list.add(map);
		
		map.put(UserEntity.t_age, 14);
		map.put(UserEntity.t_name, "新增字段测试3");
		map.put(UserEntity.t_createTime, new Date());
		map.put(UserEntity.t_phone, "1339482333");
		map.put(UserEntity.t_email, "[email protected]");
		map.put(UserEntity.t_address, "深圳某区");
		list.add(map);
		
		String[] fields = new String[]{UserEntity.t_name,UserEntity.t_age,UserEntity.t_email,UserEntity.t_phone,UserEntity.t_address};
		roleService.saveBatch(UserEntity.t_tableName, fields, list);
	}
	
	@Test
	public void testUpdate() {
		Map<String, Object> map = new HashMap<String, Object>();
		map.put(UserEntity.t_name, "抽象测试-111");
		map.put(UserEntity.t_phone, "47439482-333");
		
		LinkedHashMap<String, Object> whereMap = new LinkedHashMap<String, Object>();
		whereMap.put(UserEntity.t_id+" = ", 111);
		whereMap.put(UserEntity.t_email+" like ", "eo%");
		whereMap.put(UserEntity.t_age+" > ", 15);
		userService.update(UserEntity.t_tableName, map, whereMap);
	}
	@Test
	public void testUpdateBatch() {
		LinkedHashMap<String, String> whereFields = new LinkedHashMap<String, String>();
		whereFields.put(UserEntity.t_id, "=");
		
		List<Map<String, Object>> list = new ArrayList<Map<String,Object>>();
		Map<String, Object> map = new HashMap<String, Object>();
		map.put(UserEntity.t_name, "批量修改测试5");
		map.put(UserEntity.t_email, "[email protected]");
		map.put(UserEntity.t_phone, "55439482577");
		map.put(UserEntity.t_address, null);
                map.put(UserEntity.t_age, 11);
		map.put(UserEntity.t_id, 110);
		list.add(map);
		
		map = new HashMap<String, Object>();
		map.put(UserEntity.t_name, "批量修改测试6");
		map.put(UserEntity.t_email, "[email protected]");
		map.put(UserEntity.t_phone, "44439482577");
		map.put(UserEntity.t_address, "业余爱好者区域");
                map.put(UserEntity.t_age, 11);
		map.put(UserEntity.t_id, 111);
		list.add(map);
		
		String[] fields = new String[]{UserEntity.t_name,UserEntity.t_age,UserEntity.t_email,UserEntity.t_phone,UserEntity.t_address};
		userService.updateBatch(UserEntity.t_tableName, fields, whereFields, list);
	}
	
	@Test
	public void testFindById() {
		String[] fields = new String[]{UserEntity.t_id,UserEntity.t_name,UserEntity.t_age,UserEntity.t_email,UserEntity.t_phone,UserEntity.t_createTime,UserEntity.t_address};
		UserModel user = userService.findById(UserEntity.t_tableName, fields, 133, new UserModel(fields));
		System.out.println(user.getId()+"---"+user.getName()+"---"+user.getAge()+"---"+user.getEmail()
				+"---"+user.getPhone()+"---"+user.getCreateTime()+"---"+user.getAddress());
		Integer age = userService.findById(UserEntity.t_tableName, UserEntity.t_age, 133, Integer.class);
		System.out.println(age);
	}
	
	@Test
	public void testDelete() {
		userService.delete(UserEntity.t_tableName, 106);
	}
	@Test
	public void testDeleteBatch() {
		userService.deleteBatch(UserEntity.t_tableName, new Integer[]{105,104,103});
	}
	
	@Test
	public void testFindByList() {
		String[] fields = new String[]{UserEntity.t_id,UserEntity.t_name,UserEntity.t_age,UserEntity.t_email,UserEntity.t_phone,UserEntity.t_createTime,UserEntity.t_address};
		StringBuffer fromSql = new StringBuffer(UserEntity.t_tableName);
		
		List<Object> params = new ArrayList<Object>();
		StringBuffer where = new StringBuffer("1=1");
		where.append(" and ").append(UserEntity.t_name).append(" like ?");
		params.add("抽象测试%");
		where.append(" and ").append(UserEntity.t_phone).append(" like ?");
		params.add("47439482%");
		
		LinkedHashMap<String, String> orderby = new LinkedHashMap<String, String>();
		orderby.put(UserEntity.t_id, "desc");
		List<UserModel> list = userService.findByList(fields, fromSql.toString(), 0, where.toString(), params, null, orderby, new UserModel(fields));
		System.out.println(list.size());
		for(UserModel user:list){
			System.out.println(user.getId()+"---"+user.getName()+"---"+user.getAge()+"---"+user.getEmail()
					+"---"+user.getPhone()+"---"+user.getCreateTime()+"---"+user.getAddress());
		}
	}
	@Test
	public void testFindByList2() {
		String[] fields = new String[]{RoleEntity.t_id,RoleEntity.t_name,UserEntity.t_id,UserEntity.t_name};
		StringBuffer fromSql = new StringBuffer(RoleEntity.t_tableName);
		fromSql.append(" left join ").append(UserRoleEntity.t_tableName).append(" on ").append(UserRoleEntity.t_roleId).append("=").append(RoleEntity.t_id);
		fromSql.append(" left join ").append(UserEntity.t_tableName).append(" on ").append(UserEntity.t_id).append("=").append(UserRoleEntity.t_userId);
		
		List<Object> params = new ArrayList<Object>();
		StringBuffer where = new StringBuffer("1=1");
		where.append(" and ").append(RoleEntity.t_id).append(" = ?");
		params.add(1);
		
		LinkedHashMap<String, String> orderby = new LinkedHashMap<String, String>();
		orderby.put(RoleEntity.t_id, "desc");
		List<UserModel> list = userService.findByList(fields, fromSql.toString(), 0, where.toString(), params, null, orderby, new UserModel(fields));
		for(UserModel user:list){
			System.out.println(user.getRoleId()+"---"+user.getRoleName()+"---"+user.getId()+"---"+user.getName());
		}
	}

}

最后一个测试方法是多表关联查询，在此也给出相应的Entity、Model

public class RoleEntity {

	private static final String t_tableNickname = "role";
	public static final String t_tableName = "t_role "+t_tableNickname;
	public static final String t_id = t_tableNickname+".id";
	public static final String t_name = t_tableNickname+".name";
	public static final String t_remark = t_tableNickname+".remark";
	public static final String t_createTime = t_tableNickname+".create_time";

}

public class UserRoleEntity {

	private static final String t_tableNickname = "user_role";
	public static final String t_tableName = "t_user_role "+t_tableNickname;
	public static final String t_userId = t_tableNickname+".user_id";
	public static final String t_roleId = t_tableNickname+".role_id";

}

@SuppressWarnings("serial")
public class RoleModel implements RowMapper<RoleModel>, Serializable {
	
	private int id;
	private String name;
	private String remark;
	private Date createTime;
	
	private String[] fields;//查询结果字段集
	
	public RoleModel() { }
	
	/**
	 * 查询结果集封装成对象
	 * @param fields 查询结果字段集
	 */
	public RoleModel(String[] fields) {
		this.fields = fields;
	}


	//get/set略

	public void setFields(String[] fields) {
		this.fields = fields;
	}

	@Override
	public RoleModel mapRow(ResultSet rs, int rowNum) throws SQLException {
		RoleModel role = new RoleModel();
		if(fields!=null && fields.length>0){
			Map<String, String> map = new HashMap<String, String>();
			for(String f:fields){
				map.put(f, f);
			}
			
			if(StringUtils.isNotEmpty(map.get(RoleEntity.t_id)))
				role.setId(rs.getInt(RoleEntity.t_id));
			if(StringUtils.isNotEmpty(map.get(RoleEntity.t_name)))
				role.setName(rs.getString(RoleEntity.t_name));
			if(StringUtils.isNotEmpty(map.get(RoleEntity.t_remark)))
				role.setRemark(rs.getString(RoleEntity.t_remark));
			if(StringUtils.isNotEmpty(map.get(RoleEntity.t_createTime)))
				role.setCreateTime(rs.getDate(RoleEntity.t_createTime));
		}
		return role;
	}

}

在多表关联查询时，在UserModel类里加了两个属性：

@SuppressWarnings("serial")
public class UserModel implements RowMapper<UserModel>, Serializable {
	
	//其它属性略
	
	private int roleId;
	private String roleName;
	
	//get/set略

	@Override
	public UserModel mapRow(ResultSet rs, int rowNum) throws SQLException {
		UserModel user = new UserModel();
		if(fields!=null && fields.length>0){
			Map<String, String> map = new HashMap<String, String>();
			for(String f:fields){
				map.put(f, f);
			}
			
			//其它属性封装略
			
			if(StringUtils.isNotEmpty(map.get(RoleEntity.t_id)))
				user.setRoleId(rs.getInt(RoleEntity.t_id));
			if(StringUtils.isNotEmpty(map.get(RoleEntity.t_name)))
				user.setRoleName(rs.getString(RoleEntity.t_name));
		}
		return user;
	}

}

若有需要，还可以将Model转Map进行封装

spring+springjdbc集成之springjdbc泛型封装

集成spring jdbc，及jdbc泛型封装

猜你喜欢