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开源中国中有很多优秀的开源项目可以供我们学习。
本次分享的是一个基于Mybatise 代码自动生成工具，只需要之前设计数据库，然后使用自动生成代码的工具类，可以将entity，mapper，service，Controller层自动生成。并且实现基础的功能，增删查改，以及分页等效果。
先分享一下网站 Mybatise-Plus。可以自行过去学习。本节主要讲基于 这个工具构建SSM 项目，并创建一个简单的接口
首先设计数据库：
很简单的一个表
基于Maven
pom.xml
工具类主要依赖
<!-- Mybatis-Plus -->
<dependency>
<groupId>com.baomidou</groupId>
<artifactId>mybatis-plus</artifactId>
<version>${mybaitsplus.version}</version>
</dependency>下面是完整的pom.xml （包括Spring，jdbc，json，log 等）
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.nyist</groupId>
<artifactId>WebSockUseMybatisePlus</artifactId>
<packaging>war</packaging>
<version>0.0.1-SNAPSHOT</version>
<name>WebSockUseMybatisePlus Maven Webapp</name>
<url>http://maven.apache.org</url>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<spring.version>5.0.0.RELEASE</spring.version>
<junit.version>4.12</junit.version>
<druid.version>1.1.0</druid.version>
<fastjson.version>1.2.8</fastjson.version>
<mybaitsplus.version>2.1.9</mybaitsplus.version>
<mysql.version>5.1.38</mysql.version>
<log4j.version>1.2.17</log4j.version>
<slf4j.version>1.7.19</slf4j.version>
<aspectjweaver.version>1.8.8</aspectjweaver.version>
<fileupload.version>1.3.1</fileupload.version>
<jstl.version>1.2</jstl.version>
</properties>
<dependencies>
<!-- JUnit -->
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>${junit.version}</version>
<scope>test</scope>
</dependency>
<!-- Spring -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
<version>${spring.version}</version>
<type>jar</type>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>${spring.version}</version>
<type>jar</type>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context-support</artifactId>
<version>${spring.version}</version>
<type>jar</type>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-tx</artifactId>
<version>${spring.version}</version>
<type>jar</type>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-aop</artifactId>
<version>${spring.version}</version>
<type>jar</type>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-beans</artifactId>
<version>${spring.version}</version>
<type>jar</type>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>${spring.version}</version>
<type>jar</type>
<scope>compile</scope>
</dependency>
<!-- Spring MVC -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>${spring.version}</version>
<type>jar</type>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>${spring.version}</version>
<type>jar</type>
<scope>compile</scope>
</dependency>
<!-- AOP -->
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjweaver</artifactId>
<version>${aspectjweaver.version}</version>
</dependency>
<!-- https://mvnrepository.com/artifact/javax.servlet/javax.servlet-api -->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>3.1.0</version>
<scope>provided</scope>
</dependency>
<!-- FileUpload -->
<dependency>
<groupId>commons-fileupload</groupId>
<artifactId>commons-fileupload</artifactId>
<version>${fileupload.version}</version>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
<version>${jstl.version}</version>
</dependency>
<!-- Mybatis-Plus -->
<dependency>
<groupId>com.baomidou</groupId>
<artifactId>mybatis-plus</artifactId>
<version>${mybaitsplus.version}</version>
</dependency>
<!-- Mysql -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>${mysql.version}</version>
</dependency>
<!-- Druid -->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid</artifactId>
<version>${druid.version}</version>
</dependency>
<!-- FastJson -->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>fastjson</artifactId>
<version>${fastjson.version}</version>
</dependency>
<!-- Log -->
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>${log4j.version}</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
<version>${slf4j.version}</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-log4j12</artifactId>
<version>${slf4j.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>${spring.version}</version>
</dependency>
</dependencies>
<build>
<finalName>WebSockUseMybatisePlus</finalName>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<configuration>
<source>1.7</source>
<target>1.7</target>
</configuration>
</plugin>
</plugins>
</build>
</project>工具类：
/**
* <p>
* 代码生成器演示
* </p>
*/
public class MySqlGenerator {
/**
* <p>
* MySQL 生成演示
* </p>
*/
public static void main(String[] args) {
AutoGenerator autoGenerator = new AutoGenerator();
System.out.println("开始执行==");
//全局配置
GlobalConfig globalConfig = new GlobalConfig();
globalConfig.setOutputDir("G:\\StudyWorkSpace\\WebSocketUseMybatisePlus\\WebSockUseMybatisePlus\\src\\main\\java");//自己的项目路径
globalConfig.setFileOverride(true);
globalConfig.setActiveRecord(true);
globalConfig.setEnableCache(false);// XML 二级缓存
globalConfig.setBaseResultMap(true);// XML ResultMap
globalConfig.setBaseColumnList(false);// XML columList
globalConfig.setAuthor("geYang");
//生成文件名:
globalConfig.setXmlName("%sMapper");
globalConfig.setMapperName("%sMapper");
globalConfig.setServiceName("%sService");
globalConfig.setServiceImplName("%sImpl");
globalConfig.setControllerName("%sController");
autoGenerator.setGlobalConfig(globalConfig);
// 数据源配置
DataSourceConfig dataSourceConfig = new DataSourceConfig();
dataSourceConfig.setDbType(DbType.MYSQL);
dataSourceConfig.setTypeConvert(new MySqlTypeConvert(){
// 自定义数据库表字段类型转换【可选】
@Override
public DbColumnType processTypeConvert(String fieldType) {
return super.processTypeConvert(fieldType);
}
});
dataSourceConfig.setDriverName("com.mysql.jdbc.Driver");
dataSourceConfig.setUsername("root");
dataSourceConfig.setPassword("");
dataSourceConfig.setUrl("jdbc:mysql://127.0.0.1:3306/test?characterEncoding=utf8");
autoGenerator.setDataSource(dataSourceConfig);
// 策略配置
StrategyConfig strategyConfig = new StrategyConfig();
// strategyConfig.setCapitalMode(true); // 全局大写命名 ORACLE 注意
strategyConfig.setTablePrefix(new String[] { "yj_", "gy_", "d_", "t", "h_"});// 此处可以修改为您的表前缀
strategyConfig.setNaming(NamingStrategy.underline_to_camel);
strategyConfig.setInclude(new String[] { "gy_user" }); // 需要生成的表
// strategy.setExclude(new String[]{"test"}); // 排除生成的表
// 自定义实体父类
// strategy.setSuperEntityClass("com.baomidou.demo.TestEntity");
// 自定义实体，公共字段
// strategy.setSuperEntityColumns(new String[] { "test_id", "age" });
// 自定义 mapper 父类
// strategy.setSuperMapperClass("com.baomidou.demo.TestMapper");
// 自定义 service 父类
// strategy.setSuperServiceClass("com.baomidou.demo.TestService");
// 自定义 service 实现类父类
// strategy.setSuperServiceImplClass("com.baomidou.demo.TestServiceImpl");
// 自定义 controller 父类
// strategy.setSuperControllerClass("com.baomidou.demo.TestController");
// 【实体】是否生成字段常量（默认 false）
// public static final String ID = "test_id";
// strategy.setEntityColumnConstant(true);
// 【实体】是否为构建者模型（默认 false）
// public User setName(String name) {this.name = name; return this;}
// strategy.setEntityBuliderModel(true);
autoGenerator.setStrategy(strategyConfig);
// 包配置
PackageConfig packageConfig = new PackageConfig();
packageConfig.setParent("com.demo");
packageConfig.setController("controller");
packageConfig.setXml("mybatis.mapper");
autoGenerator.setPackageInfo(packageConfig);
// 注入自定义配置，可以在 VM 中使用 cfg.abc 【可无】
InjectionConfig injectionConfig = new InjectionConfig() {
@Override
public void initMap() {
Map<String, Object> map = new HashMap<String, Object>();
map.put("abc", this.getConfig().getGlobalConfig().getAuthor() + "-mp");
this.setMap(map);
}
};
// 自定义 xxList.jsp 生成
//List<FileOutConfig> focList = new ArrayList<FileOutConfig>();
/*focList.add(new FileOutConfig("/template/list.jsp.vm") {
@Override
public String outputFile(TableInfo tableInfo) {
// 自定义输入文件名称
return "D://my_" + tableInfo.getEntityName() + ".jsp";
}
});
cfg.setFileOutConfigList(focList);*/
autoGenerator.setCfg(injectionConfig);
// 调整 xml 生成目录演示
/*focList.add(new FileOutConfig("/templates/mapper.xml.vm") {
@Override
public String outputFile(TableInfo tableInfo) {
return "/develop/code/xml/" + tableInfo.getEntityName() + ".xml";
}
});
cfg.setFileOutConfigList(focList);*/
// mpg.setCfg(cfg);
// 关闭默认 xml 生成，调整生成 至 根目录
// TemplateConfig tc = new TemplateConfig();
// tc.setXml(null);
// mpg.setTemplate(tc);
// 自定义模板配置，可以 copy 源码 mybatis-plus/src/main/resources/template 下面内容修改，
// 放置自己项目的 src/main/resources/template 目录下, 默认名称一下可以不配置，也可以自定义模板名称
// TemplateConfig tc = new TemplateConfig();
// tc.setController("...");
// tc.setEntity("...");
// tc.setMapper("...");
// tc.setXml("...");
// tc.setService("...");
// tc.setServiceImpl("...");
// 如上任何一个模块如果设置 空 OR Null 将不生成该模块。
// mpg.setTemplate(tc);
// 执行生成
autoGenerator.execute();
// 打印注入设置【可无】
System.err.println(autoGenerator.getCfg().getMap().get("abc"));
}
}
下面进行SSM环境搭建
这里我的配置文件路径如图
其中Mapper 文件是从之前自动生成的一过来的。当然可以在生成的时候指定路径
mybatis-config.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE configuration PUBLIC "-//mybatis.org//DTD SQL Map Config 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-config.dtd">
<!--
| plugins在配置文件中的位置必须符合要求，否则会报错，顺序如下:
| properties?, settings?,
| typeAliases?, typeHandlers?,
| objectFactory?,objectWrapperFactory?,
| plugins?,
| environments?, databaseIdProvider?, mappers?
|-->
<configuration>
<!--
| 全局配置设置
|
| 可配置选项 默认值, 描述
|
| aggressiveLazyLoading true, 当设置为‘true’的时候，懒加载的对象可能被任何懒属性全部加载。否则，每个属性都按需加载。
| multipleResultSetsEnabled true, 允许和不允许单条语句返回多个数据集（取决于驱动需求）
| useColumnLabel true, 使用列标签代替列名称。不同的驱动器有不同的作法。参考一下驱动器文档，或者用这两个不同的选项进行测试一下。
| useGeneratedKeys false, 允许JDBC 生成主键。需要驱动器支持。如果设为了true，这个设置将强制使用被生成的主键，有一些驱动器不兼容不过仍然可以执行。
| autoMappingBehavior PARTIAL, 指定MyBatis 是否并且如何来自动映射数据表字段与对象的属性。PARTIAL将只自动映射简单的，没有嵌套的结果。FULL 将自动映射所有复杂的结果。
| defaultExecutorType SIMPLE, 配置和设定执行器，SIMPLE 执行器执行其它语句。REUSE 执行器可能重复使用prepared statements 语句，BATCH执行器可以重复执行语句和批量更新。
| defaultStatementTimeout null, 设置一个时限，以决定让驱动器等待数据库回应的多长时间为超时
| -->
<settings>
<!-- 这个配置使全局的映射器启用或禁用缓存 -->
<setting name="cacheEnabled" value="true"/>
<!-- 全局启用或禁用延迟加载。当禁用时，所有关联对象都会即时加载 -->
<setting name="lazyLoadingEnabled" value="true"/>
<setting name="multipleResultSetsEnabled" value="true"/>
<setting name="useColumnLabel" value="true"/>
<setting name="defaultExecutorType" value="REUSE"/>
<setting name="defaultStatementTimeout" value="25000"/>
</settings>
</configuration>Spring-mvc.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:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd">
<mvc:default-servlet-handler/>
<!-- Controller包(自动注入) -->
<context:component-scan base-package="com.nyist.controller"/>
<!-- FastJson注入 -->
<mvc:annotation-driven>
<mvc:message-converters register-defaults="true">
<!-- 避免IE执行AJAX时,返回JSON出现下载文件 -->
<!-- FastJson -->
<bean id="fastJsonHttpMessageConverter"
class="com.alibaba.fastjson.support.spring.FastJsonHttpMessageConverter">
<property name="supportedMediaTypes">
<list>
<!-- 这里顺序不能反，一定先写text/html,不然ie下出现下载提示 -->
<value>text/html;charset=UTF-8</value>
<value>application/json;charset=UTF-8</value>
</list>
</property>
<property name="features">
<array value-type="com.alibaba.fastjson.serializer.SerializerFeature">
<!-- 避免循环引用 -->
<value>DisableCircularReferenceDetect</value>
<!-- 是否输出值为null的字段 -->
<value>WriteMapNullValue</value>
<!-- 数值字段如果为null,输出为0,而非null -->
<value>WriteNullNumberAsZero</value>
<!-- 字符类型字段如果为null,输出为"",而非null -->
<value>WriteNullStringAsEmpty</value>
<!-- List字段如果为null,输出为[],而非null -->
<value>WriteNullListAsEmpty</value>
<!-- Boolean字段如果为null,输出为false,而非null -->
<value>WriteNullBooleanAsFalse</value>
</array>
</property>
</bean>
</mvc:message-converters>
</mvc:annotation-driven>
<!-- 静态资源配置 -->
<mvc:resources mapping="/resources/**" location="/resources/"/>
<!-- 对模型视图名称的解析,即在模型视图名称添加前后缀 -->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/pages/"/>
<property name="suffix" value=".html"/>
</bean>
<!-- 上传限制 -->
<bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
<!-- 上传文件大小限制为31M，31*1024*1024 -->
<property name="maxUploadSize" value="32505856"/>
</bean>
</beans>spring-mybaties.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:tx="http://www.springframework.org/schema/tx"
xmlns:aop="http://www.springframework.org/schema/aop"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop.xsd">
<!-- 配置数据源 -->
<bean name="dataSource" class="com.alibaba.druid.pool.DruidDataSource" init-method="init" destroy-method="close">
<property name="url" value="${jdbc_url}"/>
<property name="username" value="${jdbc_username}"/>
<property name="password" value="${jdbc_password}"/>
<!-- 初始化连接大小 -->
<property name="initialSize" value="0"/>
<!-- 连接池最大使用连接数量 -->
<property name="maxActive" value="20"/>
<!-- 连接池最大空闲 -->
<property name="maxIdle" value="20"/>
<!-- 连接池最小空闲 -->
<property name="minIdle" value="0"/>
<!-- 获取连接最大等待时间 -->
<property name="maxWait" value="60000"/>
<property name="validationQuery" value="${validationQuery}"/>
<property name="testOnBorrow" value="false"/>
<property name="testOnReturn" value="false"/>
<property name="testWhileIdle" value="true"/>
<!-- 配置间隔多久才进行一次检测，检测需要关闭的空闲连接，单位是毫秒 -->
<property name="timeBetweenEvictionRunsMillis" value="60000"/>
<!-- 配置一个连接在池中最小生存的时间，单位是毫秒 -->
<property name="minEvictableIdleTimeMillis" value="25200000"/>
<!-- 打开removeAbandoned功能 -->
<property name="removeAbandoned" value="true"/>
<!-- 1800秒，也就是30分钟 -->
<property name="removeAbandonedTimeout" value="1800"/>
<!-- 关闭abanded连接时输出错误日志 -->
<property name="logAbandoned" value="true"/>
<!-- 监控数据库 -->
<property name="filters" value="mergeStat"/>
</bean>
<!-- Spring整合Mybatis，更多查看文档：http://mp.baomidou.com -->
<bean id="sqlSessionFactory" class="com.baomidou.mybatisplus.spring.MybatisSqlSessionFactoryBean">
<property name="dataSource" ref="dataSource"/>
<!-- 自动扫描Mapping.xml文件 -->
<property name="mapperLocations" value="classpath:mybatis/*/*.xml"/>
<property name="configLocation" value="classpath:mybatis/mybatis-config.xml"/>
<property name="typeAliasesPackage" value="com.nyist.*"/>
<!-- <property name="typeEnumsPackage" value="com.baomidou.springmvc.model.enums"/> -->
<property name="plugins">
<array>
<!-- 分页插件配置 -->
<bean id="paginationInterceptor" class="com.baomidou.mybatisplus.plugins.PaginationInterceptor">
</bean>
</array>
</property>
<!-- 全局配置注入 -->
<property name="globalConfig" ref="globalConfig" />
</bean>
<bean id="globalConfig" class="com.baomidou.mybatisplus.entity.GlobalConfiguration">
<!--
AUTO->`0`("数据库ID自增")
INPUT->`1`(用户输入ID")
ID_WORKER->`2`("全局唯一ID")
UUID->`3`("全局唯一ID")
-->
<property name="idType" value="2" />
<!--
MYSQL->`mysql`
ORACLE->`oracle`
DB2->`db2`
H2->`h2`
HSQL->`hsql`
SQLITE->`sqlite`
POSTGRE->`postgresql`
SQLSERVER2005->`sqlserver2005`
SQLSERVER->`sqlserver`
-->
<!-- Oracle需要添加该项 -->
<!-- <property name="dbType" value="oracle" /> -->
<!-- 全局表为下划线命名设置 true -->
<!-- <property name="dbColumnUnderline" value="true" /> -->
<!-- <property name="metaObjectHandler">
<bean class="com.baomidou.springmvc.common.MyMetaObjectHandler" />
</property>
-->
</bean>
<!-- MyBatis 动态扫描 -->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="basePackage" value="com.nyist.mapper"/>
</bean>
<!-- 配置事务管理 -->
<bean name="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource"/>
</bean>
<!-- 事务管理 属性 -->
<tx:advice id="transactionAdvice" transaction-manager="transactionManager">
<tx:attributes>
<tx:method name="add*" propagation="REQUIRED"/>
<tx:method name="append*" propagation="REQUIRED"/>
<tx:method name="save*" propagation="REQUIRED"/>
<tx:method name="update*" propagation="REQUIRED"/>
<tx:method name="modify*" propagation="REQUIRED"/>
<tx:method name="edit*" propagation="REQUIRED"/>
<tx:method name="insert*" propagation="REQUIRED"/>
<tx:method name="delete*" propagation="REQUIRED"/>
<tx:method name="remove*" propagation="REQUIRED"/>
<tx:method name="repair" propagation="REQUIRED"/>
<tx:method name="get*" propagation="REQUIRED" read-only="true"/>
<tx:method name="find*" propagation="REQUIRED" read-only="true"/>
<tx:method name="load*" propagation="REQUIRED" read-only="true"/>
<tx:method name="search*" propagation="REQUIRED" read-only="true"/>
<tx:method name="datagrid*" propagation="REQUIRED" read-only="true"/>
<tx:method name="*" propagation="REQUIRED" read-only="true"/>
</tx:attributes>
</tx:advice>
<!-- 配置切面 -->
<aop:config>
<aop:pointcut id="transactionPointcut" expression="execution(* com.nyist.service..*.*(..))"/>
<aop:advisor pointcut-ref="transactionPointcut" advice-ref="transactionAdvice"/>
</aop:config>
</beans>
spring.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:context="http://www.springframework.org/schema/context" xmlns:util="http://www.springframework.org/schema/util"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util.xsd">
<!-- 引入属性文件 -->
<context:property-placeholder location="classpath:config.properties"/>
<!-- Service包(自动注入) -->
<context:component-scan base-package="com.nyist.service"/>
<import resource="classpath:spring/spring-mybatis.xml"/>
</beans>config.properties (配置了数据库信息)
validationQuery=SELECT 1
jdbc_url=jdbc:mysql://127.0.0.1:3306/websockdemo?useUnicode=true&characterEncoding=UTF-8&tinyInt1isBit=false
jdbc_username=root
jdbc_password=123456最后在web.xml中配置拦截器等
<?xml version="1.0" encoding="UTF-8"?>
<web-app version="3.0" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd">
<display-name>Archetype Created Web Application</display-name>
<!-- 加载Spring配置文件 -->
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:spring/spring.xml</param-value>
</context-param>
<!-- 字符集 过滤器 -->
<filter>
<filter-name>encodingFilter</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>encodingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<!-- Spring监听器 -->
<listener>
<description>Spring监听器</description>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<!-- 防止Spring内存溢出监听器 -->
<listener>
<listener-class>org.springframework.web.util.IntrospectorCleanupListener</listener-class>
</listener>
<!-- Spring MVC -->
<servlet>
<servlet-name>SpringMVC</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<description>SpringMVC</description>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:spring/spring-mvc.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>SpringMVC</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
<!-- Session超时时间 -->
<session-config>
<session-timeout>15</session-timeout>
</session-config>
</web-app>开发一个接口（判断登录）
package com.nyist.controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.servlet.HttpServletBean;
import com.nyist.entity.User;
import com.nyist.service.UserService;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import javax.servlet.http.HttpServletResponse;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.HttpMethod;
import org.springframework.stereotype.Controller;
/**
* <p>
* 前端控制器
* </p>
*
* @author Mike.Zhang
* @since 2018-06-12
*/
@Controller
@RequestMapping("/user")
public class UserController {
@Autowired UserService service;
private Map<String,Object> map = new HashMap<String, Object>();
@RequestMapping(value="/judgeLogin",method=RequestMethod.POST)
@ResponseBody
public Map<String,Object> judgeUser(@RequestParam("username")String uname,@RequestParam("password")String pass,HttpServletResponse response){
response.addHeader("Access-Control-Allow-Origin","*");
List<User> list = service.selectList(null);
int i =0 ;
for (User user : list) {
if(uname.equals(user.getUname())&&pass.equals(user.getPassword())) {
map.put("code", 1);
map.put("userid", user.getId());
map.put("msg", "success");
i = 1;
break;
} else {
continue;
}
}
if(i == 0) {
map.put("code", 0);
map.put("userid", null);
map.put("msg", "fail");
}
return map;
}
}
至此可以继续开发其他接口了