iBATIS操作Oracle CLOB数据

        由于最近要用iBATIS操作Oracle的CLOB字段，简单做了一个Demo。此demo依赖的JAR包有ibatis-2.3.0.677.jar、ojdbc6.jar、fastjson-1.1.26.jar。

一.创建表

--创建表
CREATE TABLE BJ.M_MODEL  (        
    MODELID     VARCHAR2(128) NOT NULL,        
    MODEL_HTML  CLOB,        
    CONSTRAINT PK_M_MODEL PRIMARY KEY (MODELID)
);

--创建同义词
create public synonym M_MODEL for BJ.M_MODEL;

--授权
grant select, insert, update, delete on BJ.M_MODEL to bijian;

二.工程代码

sqlMapConfig.xml

<?xml version="1.0" encoding="UTF-8" ?>   
  
<!DOCTYPE sqlMapConfig         
    PUBLIC "-//ibatis.apache.org//DTD SQL Map Config 2.0//EN"         
    "http://ibatis.apache.org/dtd/sql-map-config-2.dtd">   
  
<sqlMapConfig>   
  
  <transactionManager type="JDBC" commitRequired="false">   
    <dataSource type="SIMPLE">   
      <property name="JDBC.Driver" value="oracle.jdbc.driver.OracleDriver"/>   
      <property name="JDBC.ConnectionURL" value="jdbc:oracle:thin:@10.20.0.1:1521:db"/>   
      <property name="JDBC.Username" value="bijian"/>   
      <property name="JDBC.Password" value="123"/>   
    </dataSource>   
  </transactionManager>   
  <sqlMap resource="com/app/model/Model.xml"/>
</sqlMapConfig>

Model.xml

<?xml version="1.0" encoding="UTF-8" ?>   
  
<!DOCTYPE sqlMap         
    PUBLIC "-//ibatis.apache.org//DTD SQL Map 2.0//EN"         
    "http://ibatis.apache.org/dtd/sql-map-2.dtd">

<sqlMap>
	<!-- Use type aliases to avoid typing the full classname every time. -->
	<typeAlias alias="model" type="com.app.model.Model" />

	<!-- 新增 -->
	<insert id="insertModelHtml" parameterClass="java.util.Map">
		insert into m_model(MODELID, MODEL_HTML) values(#modelId#, #modelHtml#)
	</insert>
	<!-- 更新 -->
	<update id="updateModelHtml" parameterClass="java.util.Map">
		update m_model set model_html=#modelHtml# where modelId=#modelId#
	</update>
	<!-- 根据ID删除 -->
	<delete id="deleteModelById" parameterClass="java.lang.String">
		delete m_model where modelId=#modelId#
	</delete>
	<!-- 删除所有数据 -->
	<delete id="deleteAllModels">
		delete m_model
	</delete>
	<!-- 查询 -->
	<resultMap class="model" id="Model_htmlMap">
		<result property="modelId" column="modelid" javaType="String" />
		<result property="modelHtml" column="model_html" nullValue=""
			javaType="java.lang.String" jdbcType="CLOB" />
	</resultMap>
	<select id="getModelById" parameterClass="java.lang.String" resultMap="Model_htmlMap">
		SELECT t1.MODELID,t1.model_html FROM M_MODEL t1 WHERE
		MODELID=#MODELID# ORDER BY t1.MODELID
	</select>
</sqlMap>

Model.java

package com.app.model;

public class Model {

    private String modelHtml;
    private String modelId;
    
    public String getModelHtml() {
        return modelHtml;
    }
    public void setModelHtml(String modelHtml) {
        this.modelHtml = modelHtml;
    }
    public String getModelId() {
        return modelId;
    }
    public void setModelId(String modelId) {
        this.modelId = modelId;
    }
}

ModelDAO.java

package com.app.dao;

import java.util.List;

import com.app.model.Model;

public interface ModelDAO {

    public void insertModelHtml(String modelId, String modelHtml) throws Exception;
    
    public void updateModelHtml(String modelId, String modelHtml) throws Exception;

    public void deleteModelById(String modelId) throws Exception;
    
    public void deleteAllModels() throws Exception;
    
    public List<Model> getModelById(String modelId) throws Exception;
}

ModelDAOImpl.java

package com.app.dao;

import java.io.IOException;
import java.io.Reader;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import com.app.model.Model;
import com.ibatis.common.resources.Resources;
import com.ibatis.sqlmap.client.SqlMapClient;
import com.ibatis.sqlmap.client.SqlMapClientBuilder;

public class ModelDAOImpl implements ModelDAO {

    public void insertModelHtml(String modelId, String modelHtml) throws Exception {
        Map<String, String> map = new HashMap<String, String>(2);
        map.put("modelId", modelId);
        map.put("modelHtml", modelHtml);
        this.getSqlMapClientTemplate().insert("insertModelHtml", map);
    }
    
    public void updateModelHtml(String modelId, String modelHtml) throws Exception {
        Map<String, String> map = new HashMap<String, String>(2);
        map.put("modelId", modelId);
        map.put("modelHtml", modelHtml);
        int res = this.getSqlMapClientTemplate().update("updateModelHtml", map);
        System.out.println(res);
    }
    
    public void deleteModelById(String modelId) throws Exception {
        this.getSqlMapClientTemplate().delete("deleteModelById", modelId);
    }
    
    public void deleteAllModels() throws Exception {
        this.getSqlMapClientTemplate().delete("deleteAllModels");
    }
    
    public List<Model> getModelById(String modelId) throws Exception {
        return this.getSqlMapClientTemplate().queryForList("getModelById", modelId);
    }

    private static SqlMapClient getSqlMapClientTemplate() throws IOException {
        //从配置文件中得到SqlMapClient对象   
        Reader reader = Resources.getResourceAsReader("sqlMapConfig.xml");
        SqlMapClient sqlMapper = SqlMapClientBuilder.buildSqlMapClient(reader);
        reader.close();
        return sqlMapper;
    }
}

三.创建测试程序测试

ModelTest.java

package com.app.test;

import java.util.List;

import com.alibaba.fastjson.JSON;
import com.app.dao.ModelDAO;
import com.app.dao.ModelDAOImpl;
import com.app.model.Model;

public class ModelTest {

    /**  
     * @param args  
     */  
    public static void main(String[] args) throws Exception {
        ModelDAO modelDAO = new ModelDAOImpl();
        modelDAO.deleteAllModels();
        modelDAO.insertModelHtml("1", "<html><head>测试</head><body><p>Hello World!</p></body></html>");
        modelDAO.insertModelHtml("2", "<html><head>ibatis</head><body><p>Hello ibatis!</p></body></html>");
        modelDAO.insertModelHtml("3", "<html><head>JavaScript</head><body><p>Hello JavaScript!</p></body></html>");
        modelDAO.updateModelHtml("1", "<html><head>测试</head><body><p>hello World!</p></body></html>");
        modelDAO.deleteModelById("1");
        List<Model> modelList = modelDAO.getModelById("2");
        System.out.println(JSON.toJSONString(modelList));
    }
}

        运行结果：

1
[{"modelHtml":"<html><head>ibatis</head><body><p>Hello ibatis!</p></body></html>","modelId":"2"}]