SpringBoot实践 - SpringBoot+mysql

 

User.java

package com.example.entity;

import java.io.Serializable;
import java.util.Date;
import java.util.List;

import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.FetchType;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.JoinColumn;
import javax.persistence.JoinTable;
import javax.persistence.ManyToMany;
import javax.persistence.ManyToOne;
import javax.persistence.Table;

import org.springframework.format.annotation.DateTimeFormat;

import com.fasterxml.jackson.annotation.JsonBackReference;


@Entity
@Table(name="boot_user")
public class User implements Serializable {
    
    /** 
    * @Fields serialVersionUID : TODO
    */ 
    private static final long serialVersionUID = -6550777752269466791L;

    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private Long id;
    
    @Column(length=50,nullable=false)
    private String name;
    
    private String loginName;
    
    private String password;
    
    @DateTimeFormat(pattern = "yyyy-MM-dd HH:mm:ss")
    private Date createdate;
    
    @ManyToOne
    @JoinColumn(name = "did")
    @JsonBackReference
    private Department department;
    
    @ManyToMany(cascade={},fetch = FetchType.EAGER)
    @JoinTable(name = "user_role",
        joinColumns={@JoinColumn(name="user_id")},
        inverseJoinColumns = {@JoinColumn(name="roles_id")})
    private List<Role> roleList;

    public Long getId() {
        return id;
    }

    public void setId(Long id) {
        this.id = id;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public Date getCreatedate() {
        return createdate;
    }

    public void setCreatedate(Date createdate) {
        this.createdate = createdate;
    }

    public String getLoginName() {
        return loginName;
    }

    public void setLoginName(String loginName) {
        this.loginName = loginName;
    }

    public String getPassword() {
        return password;
    }

    public void setPassword(String password) {
        this.password = password;
    }

    public Department getDepartment() {
        return department;
    }

    public void setDepartment(Department department) {
        this.department = department;
    }

    public List<Role> getRoleList() {
        return roleList;
    }

    public void setRoleList(List<Role> roleList) {
        this.roleList = roleList;
    }

    public User() {
        super();
        // TODO Auto-generated constructor stub
    }

    public User(Long id, String name, String loginName, String password,
            Date createdate, Department department, List<Role> roleList) {
        super();
        this.id = id;
        this.name = name;
        this.loginName = loginName;
        this.password = password;
        this.createdate = createdate;
        this.department = department;
        this.roleList = roleList;
    }

    
}

 

Department.java,Role.java 代码参照User.java代码即可

UserDao.java

package com.example.dao;

import java.util.Date;
import java.util.List;

import org.springframework.data.jpa.repository.JpaRepository;
import org.springframework.stereotype.Repository;

import com.example.entity.User;
@Repository
public interface UserDao extends JpaRepository<User, Long> {
    
    User findByLoginNameLike(String name);

    User readByLoginName(String name);

    List<User> getByCreatedateLessThan(Date star);
}

 

DepartmentDao.java，RoleDao.java参考UserDao.java 即可，这样就实现了分页、增删改查等功能。很便捷有木有！那为什么呢？看下JpaRepository接口，方法命名规则及相关问题后续重点介绍.

 

UserController.java

package com.example.controller;

import java.util.HashMap;
import java.util.Map;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.util.Assert;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.bind.annotation.RestController;

import com.example.entity.User;
import com.example.service.DataService;
import com.example.service.UserService;

/** 
* @ClassName: UserController 
* @Description: User控制器
* @author mengfanzhu
* @date 2017年2月20日 下午5:58:19 
*/
@RestController
@RequestMapping("/user")
public class UserController {
    
    protected static Logger logger=LoggerFactory.getLogger(UserController.class);  
    @Autowired
    private UserService userService;
    @Autowired
    private DataService dataService;
    
    @RequestMapping("/demo/{name}")
    @ResponseBody
    public String demoShowName(@PathVariable String name){
         logger.debug("访问getUserByName,Name={}",name);  
         return "name is " + name;
    }
    /** 
     * @Title: UserController
     * @Description: 数据初始化
     * @author mengfanzhu
     * @throws 
     */
    @RequestMapping("/initdata")
    @ResponseBody
    public String initData(){
        dataService.initData();
        return "success";
    }
    
    /** 
     * @Title: UserController
     * @Description: 由loginName获取user
     * @param loginName
     * @author mengfanzhu
     * @throws 
     */
    @RequestMapping("/getUserByLoginName/{loginName}")
    @ResponseBody
    public Map<String,Object> getUserByName(@PathVariable String loginName){
        Map<String,Object> result = new HashMap<String, Object>();
        User user = userService.readByLoginName(loginName);
        Assert.notNull(user);
        result.put("name", user.getName());
        result.put("loginName", user.getLoginName());
        result.put("departmentName",user.getDepartment().getName());
        result.put("roleName", user.getRoleList().get(0).getName());
        return result;
    }
}

 

  JpaConfiguration.java

package com.example;

import org.springframework.boot.autoconfigure.domain.EntityScan;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.Ordered;
import org.springframework.core.annotation.Order;
import org.springframework.dao.annotation.PersistenceExceptionTranslationPostProcessor;
import org.springframework.data.jpa.repository.config.EnableJpaRepositories;
import org.springframework.transaction.annotation.EnableTransactionManagement;


/** 
* @ClassName: JpaConfiguration 
* @Description: Jpa的配置类。
* @EnableTransactionManagement 启用了JPA 的事务管理
* @EnableJpaRepositories 启用了JPA资源库并指定了上面定义的接口资源库的位置
* @EntityScan 指定了定义实体的位置
* @author mengfanzhu
* @date 2017年2月20日 下午7:21:39 
*/
@Order(Ordered.HIGHEST_PRECEDENCE)
@Configuration
@EnableTransactionManagement(proxyTargetClass = true)
@EnableJpaRepositories(basePackages = "com.example.dao")
@EntityScan(basePackages = "com.example.entity")
public class JpaConfiguration {

    @Bean
    PersistenceExceptionTranslationPostProcessor persistenceExceptionTranslationPostProcessor(){
        return new PersistenceExceptionTranslationPostProcessor();
    }
}

 DataServiceImpl.java

package com.example.service;

import java.util.Date;
import java.util.List;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.Assert;

import com.example.dao.DepartmentDao;
import com.example.dao.RoleDao;
import com.example.dao.UserDao;
import com.example.entity.Department;
import com.example.entity.Role;
import com.example.entity.User;

@Service
public class DataServiceImpl implements DataService{
    
    @Autowired
    private UserDao userDao;
    @Autowired
    private RoleDao roleDao;
    @Autowired
    private DepartmentDao departmentDao;
    
    public void initData(){
        userDao.deleteAll();
        departmentDao.deleteAll();
        roleDao.deleteAll();
        
        Department department = new Department();
        department.setName("财务部");
        department.setCreatedate(new Date());
        
        departmentDao.save(department);
        Assert.notNull(department.getId(),"部门ID不能为空！");
        
        Role role = new Role();
        role.setName("管理员");
        role.setCreatedate(new Date());
        
        roleDao.save(role);
        Assert.notNull(role.getId(),"角色ID不能为空");
        
        User user = new User();
        user.setName("管理员");
        user.setLoginName("admin");
        user.setDepartment(department);
        List<Role> roleList = roleDao.findAll();
        Assert.notNull(roleList,"角色列表不能为空！");
        user.setRoleList(roleList);
        user.setPassword("admin");
        
        userDao.save(user);
        Assert.notNull(user.getId(),"用户ID不能为空！");
    }
}

 

UserServiceImpl.java

package com.example.service;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import com.example.dao.UserDao;
import com.example.entity.User;

@Service
public class UserServiceImpl implements UserService {

    @Autowired
    private UserDao userDao;
    @Override
    public User readByLoginName(String name) {
        return userDao.readByLoginName(name);
    }

}

 

5.运行＋SpringBoot热部署 

<!-- springboot 热部署 -->
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-devtools</artifactId>
        <optional>true</optional><!-- optional=true,依赖不会传递，该项目依赖devtools；之后依赖myboot项目的项目如果想要使用devtools，需要重新引入 -->
    </dependency>  

 

 

http://www.cnblogs.com/cnmenglang/p/6420940.html