src/com/dream/service/impl/UserServiceImpl.java

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package com.dream.service.impl;


import java.util.LinkedHashMap;
import java.util.List;

import javax.persistence.Query;

import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Propagation;
import org.springframework.transaction.annotation.Transactional;

import com.dream.bean.User;
import com.dream.dao.DaoSupport;
import com.dream.page.QueryResult;
import com.dream.service.UserService;
import com.dream.util.LoginStatus;
import com.dream.util.MD5;

@Service
@Transactional
public class UserServiceImpl extends DaoSupport implements UserService {

	public void resetPwd(Long id,String pwd){
		String newpwd = MD5.MD5Encode(pwd);
		Query query = em.createQuery("update User o set o.password=?1 where o.id=?2");
		query.setParameter(1, newpwd).setParameter(2, id);
		query.executeUpdate();
	}
	@Transactional(readOnly=true,propagation=Propagation.NOT_SUPPORTED)
	public boolean isexits(String name){
		Query query = em.createQuery("select count(o) from User o where o.name=?1");
		query.setParameter(1, name);
		Long count = (Long)query.getSingleResult();
		if(count>=1){
			return true;
		}
		return false;
	}
	
	/**
	 * MD5加密
	 */
	public void save(Object entity) {
		User user = ((User)entity);
		try {
			user.setPassword(MD5.MD5Encode(user.getPassword()));
		} catch (Exception e) {
			e.printStackTrace();
		} 
		
		super.save(user);
	}
	public void setVisibleStatus(Long[] ids, boolean status) {
		 if(ids!=null&&ids.length>0){
			 StringBuffer jpql = new StringBuffer();
			 for(int i=0;i<ids.length;i++){
				 jpql.append("?").append(i+2).append(",");
			 }
			 jpql.deleteCharAt(jpql.length()-1);