iBatis-通过ID进行删除操作
iBatis-通过ID进行删除操作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: Main.java
import java.util.List;
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");
sqlMapper.delete("deleteAccountById", 1);
util.checkData("select * from account");
}
}
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: 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("");
}
}
}
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