(4) hibernate增删查改+批量操作+类似Mybatis动态sql

 简介

采用spring + hibernate + freemaker+ maven搭建起来的一个hibernate增删查改和

类似mybatis动态sql查询的一个案例

 增删查改demo + 动态sql 

 数据库表(只有一张USER表)

动态sql的xml (test-dynamicHibernateSql.xml )

	  
	    20) > 
	           and age > 20
	        <#else> 
	           and age < 20
	         
	    ]]>
    
    
    
      
	     ${age}
	     ]]>
    
    
       
	     ${age}
	     ]]>
    
    
      
	     ${age}
	     ]]>
    
    
      
	     ${age}
	     ]]>
    
    
  

 user的映射xml文件 ( User.hbm.xml )

 junit测试增删查改和动态sql (TestUserService.java )

package test;

import java.io.Serializable;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Date;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import javax.annotation.Resource;

import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;

import com.business.entity.User;
import com.business.service.UserService;
import com.business.service.impl.UserServiceImpl;
import com.system.hibernate.StatementTemplate;


@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations = { "classpath:applicationContext.xml"})  
public class TestUserService {

	@Resource(name="userService")
	private UserServiceImpl userService;
	
	/**
	 * 保存单个用户方法
	 * */
	@Test
	public void testSave(){
		User u = new User("zhangsan",new Date() );
		this.userService.save(u);
	}
	
	/**
	 * 批量保存多个用户方法
	 * */
	@Test
	public void testSaveAll(){
		List list = new ArrayList();
		for(int i = 0 ; i < 20000 ; i++){
			User user = new User("zhansan"+i,new Date());
			list.add(user);
		}
		this.userService.saveAll(list);
	}
	
	/**
	 * 根据多个id查询
	 * */
	@Test
	public void testGetByIds(){
		List idsList = new ArrayList();
		for(int i = 0 ; i < 100 ; i++){
			idsList.add(39100+i);
		}
		List userList = this.userService.get(User.class, idsList);
		for(int i = 0 ; i < userList.size() ; i++){
			System.out.println(" i =  "+i+"  user name = " + userList.get(i).getName()  );
		}
		
	}
	
	/**
	 * 取得对象的主键名.
	 */
	@Test
	public void testGetIdName() {
		String idName = this.userService.getIdName(User.class);
		System.out.println("idName = " + idName);
	}
	
	
	/**
	 * 删除所有对象
	 * */
	@Test
	public void testDeleteAll() {
		List idsList = new ArrayList();
		for(int i = 0 ; i < 100 ; i++){
			idsList.add(29100+i);
		}
		List userList = this.userService.get(User.class, idsList);
		this.userService.deleteAll(userList);
	}
	
	
	
	/**
	 * 更新对象
	 * */
	@Test
	public void testUpdate() {
		int id = 39100;
		User user = (User) this.userService.get(User.class,id);
		user.setName("update name");
		this.userService.update(user);
	}
	
	/**
	 * 根据id查询
	 * */
	@Test
	public void testGetById() {
		int id = 39100;
		User user = (User) this.userService.get(User.class,id);
		System.out.println("name = " + user.getName() );
	}
	
	/**
	 * 更新所有对象
	 * */
	@Test
	public void testUpdateAll(){
		List ids = new ArrayList();
		ids.add(1);ids.add(2);ids.add(3);ids.add(4);ids.add(5);
		ids.add(39101);ids.add(7);ids.add(39300);ids.add(1);ids.add(39400);
		List userList = (List) this.userService.get(User.class, ids);
		for(int i = 0 ; i < userList.size() ;i ++ ){
			User user = userList.get(i);
			user.setName("update username"+i );
		}
		this.userService.updateAll(userList);
	}
	
	/**
	 * 保存或更新
	 * */
	@Test
	public void testSaveOrUpdate(){
		User u = new User("zhangsan2",new Date() );
		u.setId(1);
		this.userService.saveOrUpdate(u);
	}
	
	
	/**
	 * 保存或更新所有实体
	 * */
	@Test
	public void testSaveOrUpdateAll(){
		List ids = new ArrayList();
		ids.add(1);ids.add(2);ids.add(3);ids.add(4);ids.add(5);
		ids.add(39101);ids.add(7);ids.add(39300);ids.add(1);ids.add(39400);
		List userList = (List) this.userService.get(User.class, ids);
		User newUser = new User("saveOrdate new user",new Date());
		for(int i = 0 ; i < userList.size() ; i++){
			 User user = userList.get(i);
			 user.setName("saveOrUpdateAll name"+i);
		}
		userList.add(newUser);
		this.userService.saveOrUpdateAll(userList);
	}
	
	/**
	 * 根据原生sql语句进行查询,返回对象集合 
	 * String sql 原生sql语句
	 * String[] fields 必需为对象字段属性 
	 * 例子: Sql : select username as name ,userage as age from user;
	 * User : private String name , private int age 
	 * clazz = User.class 
	 * fields ={ "name","age" }; //注意 sql和fields必需一致,并且fields为User的字段属性 
	 * 返回格式 list = { user1,user2,user3... }
	 * 
	 * */
	@Test
	public void testFindBySql1() {
		String sql = "SELECT name,birthday,age,address FROM USER WHERE NAME LIKE 'zhansan100%'";
		String[] fields = { "name","birthday","age","address" };
		List> list = this.userService.findBySql(sql, fields);
		if(list!=null&&list.size()>0){
			for(int i = 0 ; i < list.size() ; i++ ){
				Map map = list.get(i);
				System.out.println(
						"name = " + map.get("name") 
					+ "  birthday = " + map.get("birthday") 
					+ "  age = " + map.get("age") 
					+ "  address = " + map.get("address")
				);
			}
		}
	}
	
	/**
	 * 根据原生sql语句进行查询,返回对象集合 
	 * String sql 原生sql语句
	 *  Class clazz 为类 String[] fields
	 * 必需为对象字段属性 
	 * 例子: Sql : select username as name ,userage as age from user;
	 * User : private String name , private int age 
	 * clazz = User.class 
	 * fields ={ "name","age" }; //注意 sql和fields必需一致,并且fields为User的字段属性 
	 * 返回格式 list = { user1,user2,user3... }
	 * 
	 * */
	@Test
	public void testFindBySql2() {
		String sql = "SELECT name,birthday,age,address FROM USER WHERE NAME LIKE 'zhansan100%'";
		String[] fields = { "name","birthday","age","address" };
		List list = this.userService.findBySql(sql,User.class, fields);
		if(list!=null&&list.size()>0){
			for(int i = 0 ; i < list.size() ; i++ ){
				User user = list.get(i);
				System.out.println(
						"name = " + user.getName()
					+ "  birthday = " + user.getBirthday()
					+ "  age = " + user.getAge()
					+ "  address = " + user.getAddress()
				);
			}
		}
	}
	
	/**
	 * 根据hql查询
	 * */
	@Test
	public void testFindByHql1() {
		String hql = " from User u where u.name like 'zhansan100%' ";
		List userList = this.userService.findByHql(hql);
		if( userList!=null && userList.size()>0 ){
			for(int i = 0 ; i < userList.size() ; i++){
				User user = userList.get(i);
				System.out.println(
						"name = " + user.getName()
					+ "  birthday = " + user.getBirthday()
					+ "  age = " + user.getAge()
					+ "  address = " + user.getAddress()
				);
			}
		}
	}
	
	/**
	 * 根据id查询
	 * */
	@Test
	public void testLoadById() {
		int id = 22114;
		User user = (User) this.userService.load(User.class, id);
		if(user==null) return ;
		System.out.println(
				"name = " + user.getName()
			+ "  birthday = " + user.getBirthday()
			+ "  age = " + user.getAge()
			+ "  address = " + user.getAddress()
		);
	}
	
	/**
	 * 根据Id更新对象指定的属性
	 * */
	@Test
	public void testUpdateOneByProperty1() {
		int id = 22114;
		List pName =  new ArrayList();
		List pValue = new ArrayList();
		pName.add("name");pValue.add("zhangsan7259");
		pName.add("age");pValue.add(1);
		this.userService.updateOneByPropertys(User.class, id, pName, pValue);
	}
	
	/**
	 * 根据id更新多个属性
	 * */
	@Test
	public void testUpdateOneByPropertys2() {
		int id = 39300;
		Map map = new HashMap();
		map.put("name", "zhangsan222");
		map.put("age", 1 );
		this.userService.updateOneByPropertys(User.class, id, map);
		
	}
	
	/**
	 * 动态命名查询,返回对象集合 
	 * 返回格式
	 * map1 = { name=zhangsan,age=1 }, map2 = { name=zhangsan2,age=2 }, map3 = { name=zhangsan3,age=3 }
	 * list = {map1,map2,map3}
	 * 
	 * */
	@Test
	public void testFindByNamedQuery1() {
		String queryName = "user.findByAge";
		String[] fields = {"age"};
		Map pramMap = new HashMap();
		pramMap.put("age", 50);
		List>  list = this.userService.findByNamedQuery(queryName, fields, pramMap);
		if(list==null||list.size()==0) return ;
		for(int i = 0 ; i < list.size() ; i++){
			 Map map = list.get(i);
			 System.out.println( " i = "+i+"  age = " + map.get("age") );
		}
	}
	
	/**
	 * 动态命名查询,返回对象集合 
	 * 返回格式
	 * map1 = { name=zhangsan,age=1 }, map2 = { name=zhangsan2,age=2 }, map3 = { name=zhangsan3,age=3 }
	 * list = {map1,map2,map3}
	 * 
	 * */
	@Test
	public void testFindByNamedQuery2() {
		String queryName = "user.findByName";
		String[] fields = {"age","name"};
		Map pramMap = new HashMap();
		pramMap.put("age", 50);
		pramMap.put("name", "zhansan");
		List>  list = this.userService.findByNamedQuery(queryName, fields, pramMap);
		if(list==null||list.size()==0) return ;
		for(int i = 0 ; i < list.size() ; i++){
			 Map map = list.get(i);
			 System.out.println( " i = "+i+"  age = " + map.get("age") );
		}
	}
	/**
	 * 动态命名查询,返回对象集合 
	 * 返回格式
	 * list = {user1,user2,user3}
	 * 
	 * */
	@Test
	public void testFindByNamedQuery3() {
		String queryName = "user.findByName2";
		String[] fields = {"name","birthday","age","address"};
		Map pramMap = new HashMap();
		pramMap.put("age", 50);
		pramMap.put("name", "zhansan");
		List