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RSS订阅原创 java-blog-0713
blog.class @Entity @Table(name = “t_blog”) public class Blog { @Id @GeneratedValue private Long id; private String title; @Basic(fetch = FetchType.LAZY) @Lob private String content; private String firstPicture; private String flag; private Integer views;
2020-07-14 17:19:33
182
原创 java-blog
Blog @Entity @Table(name = “t_blog”) public class Blog { @Id @GeneratedValue private Long id; private String title; @Basic(fetch = FetchType.LAZY) @Lob private String content; private String firstPicture; private String flag; private Integer views; priva
2020-07-11 15:26:47
190
原创 JAVA语言用springboot框架实现简单的登录
dao.UserDao package com.zr.dao; import com.zr.po.User; import org.springframework.data.jpa.repository.JpaRepository; public interface UserDao extends JpaRepository<User,Long> { User findByUsernameAndPassword(String username, String password); } po.B
2020-07-07 20:18:10
485
原创 java语言简单实现角色添加
rolemapper.xml select roleId from user_role where userId=#{userId} select * from tb_role WHERE id NOT IN (SELECT roleId FROM user_role WHERE userId=#{id}) RoleService @Service public class RoleService implements IRoleS
2020-07-06 20:19:22
389
原创 java语言实现简单的模糊查询
UserService @Override public void deleteAll(List ids) { userDao.deleteAll(ids); } UserController @RequestMapping(“deleteAll.do”) public String deleteAll(String userList){ String[] strs = userList.split(","); List ids=new ArrayList<>(); for(String s:s
2020-07-03 16:25:39
1772
原创 java实现简单的分页管理和拦截器
Pageinfo类 public class PageInfo { private List list; private int totalPage; private int size; private int totalCount; private int currentPage; public List<T> getList() { return list; } public void setList(List<T> list) { this.list = li
2020-07-02 16:23:14
418
原创 java语言实现简单的增删改查
UserController package com.zhongruan.controller; import com.zhongruan.bean.User; import com.zhongruan.service.IUserService; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Controller; import org.springfr
2020-07-01 16:04:08
679
原创 java语言简单编写登录及用户简单查询
user编写 package com.zhongruan.bean; import com.mchange.v2.c3p0.ComboPooledDataSource; public class User { public User() { } public User(int id, String username, String password) { this.id = id; this.username = username; this.password = password
2020-06-30 16:21:09
346
原创 崭露头角
查询 package com.zr.servlet; import com.zr.bean.User; import com.zr.util.DBUtil; import java.sql.*; import java.util.ArrayList; import java.util.List; public class find { public User findAll(String username){ Connection connection= null; PreparedStatement st
2020-06-29 19:00:21
117
原创 java数据库连接和增删改查
//增加 package com.zr; import util.DBUtil; import java.sql.*; public class Find { public static void main(String[] args) throws ClassNotFoundException, SQLException { Connection connection = DBUtil.getConnection(); System.out.println(“创建连接成功”); //3.写sql语句 St
2020-06-28 13:58:24
172
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