使用iBatis获得对象

starbhhc

File: Account.java   
   
   
public class Account {   
   
  private int id;   
  private String firstName;   
  private String lastName;   
  private String emailAddress;   
   
  public int getId() {   
    return id;   
  }   
   
  public void setId(int id) {   
    this.id = id;   
  }   
   
  public String getFirstName() {   
    return firstName;   
  }   
   
  public void setFirstName(String firstName) {   
    this.firstName = firstName;   
  }   
   
  public String getLastName() {   
    return lastName;   
  }   
   
  public void setLastName(String lastName) {   
    this.lastName = lastName;   
  }   
   
  public String getEmailAddress() {   
    return emailAddress;   
  }   
   
  public void setEmailAddress(String emailAddress) {   
    this.emailAddress = emailAddress;   
  }   
   
}   
   
File: Account.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 namespace="Account">   
   
  <!-- Use type aliases to avoid typing the full classname every time. -->   
  <typeAlias alias="Account" type="Account"/>   
   
  <!-- Result maps describe the mapping between the columns returned   
       from a query, and the class properties.  A result map isn't   
       necessary if the columns (or aliases) match to the properties     
       exactly. -->   
  <resultMap id="AccountResult" class="Account">   
    <result property="id" column="ACC_ID"/>   
    <result property="firstName" column="ACC_FIRST_NAME"/>   
    <result property="lastName" column="ACC_LAST_NAME"/>   
    <result property="emailAddress" column="ACC_EMAIL"/>   
  </resultMap>   
   
  <!-- Select with no parameters using the result map for Account class. -->   
  <select id="selectAllAccounts" resultMap="AccountResult">   
    select * from ACCOUNT   
  </select>   
   
  <!-- A simpler select example without the result map.  Note the     
       aliases to match the properties of the target result class. -->   
  <select id="selectAccountById" parameterClass="int" resultClass="Account">   
    select   
      ACC_ID as id,   
      ACC_FIRST_NAME as firstName,   
      ACC_LAST_NAME as lastName,   
      ACC_EMAIL as emailAddress   
    from ACCOUNT   
    where ACC_ID = #id#   
  </select>   
      
  <!-- Insert example, using the Account parameter class -->   
  <insert id="insertAccount" parameterClass="Account">   
    insert into ACCOUNT (   
      ACC_ID,   
      ACC_FIRST_NAME,   
      ACC_LAST_NAME,   
      ACC_EMAIL   
    )values (   
      #id#, #firstName#, #lastName#, #emailAddress#   
    )   
  </insert>   
   
  <!-- Update example, using the Account parameter class -->   
  <update id="updateAccount" parameterClass="Account">   
    update ACCOUNT set   
      ACC_FIRST_NAME = #firstName#,   
      ACC_LAST_NAME = #lastName#,   
      ACC_EMAIL = #emailAddress#   
    where   
      ACC_ID = #id#   
  </update>   
   
  <!-- Delete example, using an integer as the parameter class -->   
  <delete id="deleteAccountById" parameterClass="int">   
    delete from ACCOUNT where ACC_ID = #id#   
  </delete>   
   
</sqlMap>   
   
File: 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>   
   
  <!-- Configure a built-in transaction manager.  If you're using an     
       app server, you probably want to use its transaction manager     
       and a managed datasource -->   
  <transactionManager type="JDBC" commitRequired="false">   
    <dataSource type="SIMPLE">   
      <property name="JDBC.Driver" value="org.hsqldb.jdbcDriver"/>   
      <property name="JDBC.ConnectionURL" value="jdbc:hsqldb:data/tutorial"/>   
      <property name="JDBC.Username" value="sa"/>   
      <property name="JDBC.Password" value=""/>   
    </dataSource>   
  </transactionManager>   
   
  <!-- List the SQL Map XML files. They can be loaded from the     
       classpath, as they are here (com.domain.data...) -->   
  <sqlMap resource="Account.xml"/>   
  <!-- List more here...   
  <sqlMap resource="com/mydomain/data/Order.xml"/>   
  <sqlMap resource="com/mydomain/data/Documents.xml"/>   
  -->   
   
</sqlMapConfig>   
   
   
File: Main.java   
   
import com.ibatis.sqlmap.client.SqlMapClient;   
   
public class Main{   
      
  public static void main(String[] a) throws Exception{   
    Util util = new Util();   
    util.executeSQLCommand("create table ACCOUNT(ACC_ID int, ACC_FIRST_NAME varchar,ACC_LAST_NAME varchar,ACC_EMAIL varchar);");   
        
    SqlMapClient sqlMapper = util.getSqlMapClient();   
        
        
        
    Account account  = new Account();   
    account.setId(1);   
    account.setEmailAddress("e");   
    account.setFirstName("first");   
    account.setLastName("last");   
        
    sqlMapper.insert("insertAccount", account);   
   
    util.checkData("select * from account");   
   
   
    Account acc =  (Account) sqlMapper.queryForObject("selectAccountById", 1);   
    System.out.println(acc.getFirstName());   
        
  }   
      
}   
   
File: Util.java   
   
import java.io.Reader;   
import java.sql.Connection;   
import java.sql.DriverManager;   
import java.sql.ResultSet;   
import java.sql.ResultSetMetaData;   
import java.sql.Statement;   
   
import com.ibatis.common.resources.Resources;   
import com.ibatis.sqlmap.client.SqlMapClient;   
import com.ibatis.sqlmap.client.SqlMapClientBuilder;   
   
public class Util {   
  Statement st;   
      
  public Util() throws Exception{   
    // Load the JDBC driver.   
    Class.forName("org.hsqldb.jdbcDriver");   
    System.out.println("Driver Loaded.");   
    // Establish the connection to the database.   
    String url = "jdbc:hsqldb:data/tutorial";   
   
    Connection conn = DriverManager.getConnection(url, "sa", "");   
    System.out.println("Got Connection.");   
    st = conn.createStatement();   
  }   
  public SqlMapClient getSqlMapClient() throws Exception{   
    Reader reader = Resources.getResourceAsReader("SqlMapConfig.xml");   
    SqlMapClient sqlMapper = SqlMapClientBuilder.buildSqlMapClient(reader);   
    reader.close();     
    return sqlMapper;   
  }   
  public void executeSQLCommand(String sql) throws Exception {   
    st.executeUpdate(sql);   
  }   
  public void checkData(String sql) throws Exception {   
    ResultSet rs = st.executeQuery(sql);   
    ResultSetMetaData metadata = rs.getMetaData();   
   
    for (int i = 0; i < metadata.getColumnCount(); i++) {   
      System.out.print("\t"+ metadata.getColumnLabel(i + 1));     
    }   
    System.out.println("\n----------------------------------");   
   
    while (rs.next()) {   
      for (int i = 0; i < metadata.getColumnCount(); i++) {   
        Object value = rs.getObject(i + 1);   
        if (value == null) {   
          System.out.print("\t       ");   
        } else {   
          System.out.print("\t"+value.toString().trim());   
        }   
      }   
      System.out.println("");   
    }   
  }   
   
   
}