iBatis：第一步，思路学习

学习来源：　　http://developer.51cto.com/art/200907/138286.htm

　　　　　　　http://www.cnblogs.com/youxiuxiaocai/p/3386397.html

仍然以文件的思路展开对SSI项目开发的学习。

1. 实体类：Acount.java

package example;
public class Account {
    private String username;
    private String password;  

    public String getUsername(){　　　　 return username;　  }
    public void setUsername(String username){　　　　 this.username=username;
    }  

    public String getPassword(){　　　　 return password;　  }
    public void setPassword(String password){ 　　　　this.password=password;
    }
} 

2.  对实体类的操作配置文件：Acount.xml

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

﹤select id="getAccount" parameterClass="java.lang.String" resultClass="example.Account"﹥
    select * from Account where username = #value#　　<!-- #value# 是将要传进去的参数 -->  　　
﹤/select﹥  

﹤insert id="createAccount" parameterClass="example.Account"﹥
    insert into Account (username, password)
    values ( #username#, #password# )
﹤/insert﹥
﹤/sqlMap﹥ 

3. 配置数据库连接：sqlmapconfig.xml

﹤?xml version="1.0" encoding="UTF-8" ?﹥
﹤!DOCTYPE sqlMapConfig
PUBLIC "-//iBATIS.com//DTD SQL Map Config 2.0//EN"
"http://www.ibatis.com/dtd/sql-map-config-2.dtd"﹥
﹤sqlMapConfig﹥
﹤settings
    cacheModelsEnabled="true"
    enhancementEnabled="true"
    lazyLoadingEnabled="true"
    maxRequests="32"
    maxSessions="10"
    maxTransactions="5"
    useStatementNamespaces="false"
/﹥
﹤transactionManager type="JDBC" ﹥
    ﹤dataSource type="SIMPLE"﹥
      ﹤property name="JDBC.Driver" value="sun.jdbc.odbc.JdbcOdbcDriver"/﹥
      ﹤property name="JDBC.ConnectionURL" value="jdbc:odbc:Blog"/﹥
      ﹤property name="JDBC.Username" value="admin"/﹥
      ﹤property name="JDBC.Password" value=""/﹥
    ﹤/dataSource﹥
﹤/transactionManager﹥
﹤sqlMap resource="Account.xml" /﹥
﹤/sqlMapConfig﹥ 

4. 测试

com.ibatis.sqlmap.client.SqlMapClient sqlMap = null;
    try {
        java.io.Reader reader = om.ibatis.common.resources.Resources.getResourceAsReader ("sql-map-config.xml");
        //初始化iBatis，获取一个SqlMapClient对象，即此处的sqlMap
        sqlMap = SqlMapClientBuilder.buildSqlMapClient(reader);
    } catch (Exception e) {
        e.printStackTrace();
    } 

//通过SqlMapClient对象，对数据库进行操作
try {
     Account account = new Account();
     account.setUsername("micheal");
     account.setPassword("1234");
    //增
     sqlMap.insert("createAccount", account); 

    //查
     Account accout = (Account)sqlMap.queryForObject("getAccount", "admin");
 }