SpringBoot使用WEB进阶

摘要: SpringBoot使用WEB进阶

1.使用aop处理请求get，post

2.统一异常检查

3.单元测试

4效果预览：







5.开发环境

maven开发环境：3.3.9

Itellij IDEA旗舰版

java开发环境java version "1.8.0_91"

6.完成的 完整的代码实例

HttpAspect

package com.hls;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication
public class HlsApplication {

public static void main(String[] args) {
SpringApplication.run(HlsApplication.class, args);
}
}

BoyController

package com.hls.controller;

import com.hls.domain.Boy;
import com.hls.domain.Result;
import com.hls.repository.BoyRepository;
import com.hls.service.BoyService;
import com.hls.util.ResultUtil;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.validation.BindingResult;
import org.springframework.web.bind.annotation.*;

import javax.validation.Valid;
import java.util.List;

/**
* Created by huangliusong on 2017/7/19.
* 查询男生列表
*/
@RestController
public class BoyController {
@Autowired
private BoyRepository boyRepository;
@Autowired
private BoyService boyService;
@GetMapping(value = "/boys")
public List<Boy> boylist(){
return boyRepository.findAll();
}

@PostMapping(value="/boys")
public Result<Boy>  boyadd(@Valid Boy boy, BindingResult bindingResult){
if(bindingResult.hasErrors()){

return ResultUtil.error(0,bindingResult.getFieldError().getDefaultMessage());
}
boy.setAge(boy.getAge());
boy.setBirth(boy.getBirth());
boy.setId(1001);
return ResultUtil.success(boyRepository.save(boy));
}

//查询
@GetMapping(value = "/boys/{id}")
public Boy findBoy(@PathVariable("id")Integer id){
return boyRepository.findOne(id);
}
//更新
@PostMapping(value = "/boys/{id}")
public Boy updateBoy(@PathVariable("id")Integer id,
@RequestParam("age")String age,
@RequestParam("birth")String birth){
Boy boy=new Boy();
boy.setId(id);
boy.setBirth(birth);
boy.setAge(age);
return boyRepository.save(boy);
}
//删除
@DeleteMapping(value = "/boys/{id}")
public void deleteBoy(@PathVariable("id")Integer id){
boyRepository.delete(id);
}

//通过年龄查询
@GetMapping(value = "boys/age/{age}")
public List<Boy> boylistByAge(@PathVariable("age") String age){
return boyRepository.findByAge(age);
}

@PostMapping(value = "/boys/two")
public void boyTwo(){
boyService.insertBoyTow();
}

/**
* 对年龄进行判断
*/
@GetMapping(value = "/boys/getAge/{id}")
public void  getAge(@PathVariable("id")Integer id)throws Exception{
boyService.getAge(id);
}
}

HelloController

package com.hls.controller;

import com.hls.repository.Boyproperties;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;

/**
* Created by huangliusong on 2017/7/18.
*/
@RestController
@RequestMapping("/huang")
public class HelloController {

@Autowired
private Boyproperties boyproperties;
@GetMapping("/liu1")
public String say  (@RequestParam(value="id",required = false, defaultValue ="0") Integer id){
return "index.html?"+id;
}
}

Boy

package com.hls.domain;

import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;
import javax.validation.constraints.Min;

/**
* Created by huangliusong on 2017/7/19.
*/
@Entity
public class Boy {
@Id
@GeneratedValue
private Integer id;
@Min(value=18,message = "不是18,不能录入进去")
private String age;
private String birth;

public Integer getId() {
return id;
}

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

public String getAge() {
return age;
}

public void setAge(String age) {
this.age = age;
}

public String getBirth() {
return birth;
}

public void setBirth(String birth) {
this.birth = birth;
}

public Boy() {
}

@Override
public String toString() {
return "Boy{" +
"id=" + id +
", age='" + age + '\'' +
", birth='" + birth + '\'' +
'}';
}
}

Result

package com.hls.domain;

/**
* http请求返回的最外层对象
* Created by huangliusong on 2017/7/22.
*/
public class Result<T> {
//错误码
private Integer code;
//提示信息
private  String msg;
//具体的内容
private T data;

public Integer getCode() {
return code;
}

public void setCode(Integer code) {
this.code = code;
}

public String getMsg() {
return msg;
}

public void setMsg(String msg) {
this.msg = msg;
}

public T getData() {
return data;
}

public void setData(T data) {
this.data = data;
}
}

ResultEnum

package com.hls.enmus;

/**
* Created by huangliusong on 2017/7/22.
*/
public enum ResultEnum {
UNKNOW_ERROR(-1,"未知错误"),
SUCCESS(0,"成功"),
PRIMARY_SCHOOL(1001,"你还在上小学"),
MIDDLE_SCHOOL(1002,"你还在上初中")

;

public Integer getCode() {
return code;
}

public void setCode(Integer code) {
this.code = code;
}

public String getMsg() {
return msg;
}

public void setMsg(String msg) {
this.msg = msg;
}

private Integer code;
private String msg;

ResultEnum(Integer code, String msg) {
this.code = code;
this.msg = msg;
}
}

BoyException

package com.hls.exception;

import com.hls.domain.Result;
import com.hls.enmus.ResultEnum;

/**
* Created by huangliusong on 2017/7/22.
*/
public class BoyException extends RuntimeException{
private   Integer code;

public BoyException(ResultEnum resultEnum) {
super(resultEnum.getMsg());
this.code = resultEnum.getCode();
}

public Integer getCode() {
return code;
}

public void setCode(Integer code) {
this.code = code;
}
}

ExceptionHandle

package com.hls.handler;

import com.hls.domain.Result;
import com.hls.exception.BoyException;
import com.hls.util.ResultUtil;
import org.springframework.web.bind.annotation.ControllerAdvice;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.ResponseBody;

/**
* Created by huangliusong on 2017/7/22.
*/
@ControllerAdvice
public class ExceptionHandle {
@ExceptionHandler(value = Exception.class)
@ResponseBody
public Result handler(Exception e){
if(e instanceof BoyException){
BoyException boyException=(BoyException)e;
return ResultUtil.error(boyException.getCode(),boyException.getMessage());
}else{
return ResultUtil.error(-1,"未知错误");
}

}
}

Boyproperties

package com.hls.repository;

import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.context.annotation.Configuration;
import org.springframework.stereotype.Component;

/**
* Created by huangliusong on 2017/7/18.
*/
@Component
@ConfigurationProperties(prefix = "boy")
public class Boyproperties {
private String hlsBirth;
private Integer hlsAge;
public String getHlsBirth() {
return hlsBirth;
}

public void setHlsBirth(String hlsBirth) {
this.hlsBirth = hlsBirth;
}

public void setHlsAge(Integer hlsAge) {
this.hlsAge = hlsAge;
}

public Integer getHlsAge() {
return hlsAge;
}

}

BoyRepository

package com.hls.repository;

import com.hls.domain.Boy;
import org.springframework.data.jpa.repository.JpaRepository;

import java.util.List;

/**
* Created by huangliusong on 2017/7/19.
*/
public interface BoyRepository extends JpaRepository<Boy,Integer>{
//通过年龄查询
public List<Boy> findByAge(String age);
}

BoyService

package com.hls.service;

import com.hls.enmus.ResultEnum;
import com.hls.exception.BoyException;
import com.hls.repository.BoyRepository;
import com.hls.domain.Boy;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import javax.transaction.Transactional;

/**
* Created by huangliusong on 2017/7/21.
*/
@Service
public class BoyService {
@Autowired
private BoyRepository boyRepository;
//添加事物注解
@Transactional
public void insertBoyTow(){
Boy boy1=new Boy();
boy1.setAge("67");
boy1.setBirth("1967");
Boy boy2=new Boy();
boy2.setAge("688");
boy2.setBirth("1968");

boyRepository.save(boy1);
boyRepository.save(boy2);
}
public void getAge(Integer id) throws  Exception{
Boy boy=boyRepository.findOne(id);
Integer age=Integer.parseInt(boy.getAge());
System.out.println(age);
if(age<10){
//返回你还在上小学
throw new BoyException(ResultEnum.PRIMARY_SCHOOL);
}else if(age>10&&age<16){
//返回 你还在上初中
throw new BoyException(ResultEnum.MIDDLE_SCHOOL);
}

}

/**
* 通过id查询详细信息
* @param id
* @return
*/
public Boy findOneBoy(Integer id){
return boyRepository.findOne(id);
}
}

ResultUtil

package com.hls.util;

import com.hls.domain.Result;
import com.sun.org.apache.regexp.internal.RE;

/**
* Created by huangliusong on 2017/7/22.
*/
public class ResultUtil {
public static Result success(Object object){
Result result=new Result();
result.setCode(0);
result.setData(object);
result.setMsg("成功");
return result;
}
public  static Result success(){
return success(null);
}
public static Result error(Integer code,String msg){
Result result=new Result();
result.setMsg(msg);
result.setCode(code);
result.setData("null");
return result;
}
}

HlsApplication

package com.hls;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication
public class HlsApplication {

public static void main(String[] args) {
SpringApplication.run(HlsApplication.class, args);
}
}