【SpringBoot】单元测试进阶实战、自定义异常处理、t部署war项目到tomcat9和启动原理讲解

package com.atguigu.springboot;import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.autoconfigure.web.servlet.AutoConfigureMockMvc;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.context.junit4.SpringRunner;
import org.springframework.test.web.servlet.MockMvc;
import org.springframework.test.web.servlet.MvcResult;
import org.springframework.test.web.servlet.request.MockMvcRequestBuilders;
import org.springframework.test.web.servlet.result.MockMvcResultMatchers;/**
* 功能描述：测试mockmvc类
*
* <p> 创建时间：Apr 24, 2018 10:01:12 PM </p>
* <p> 作者：小D课堂</p>
*/
@RunWith(SpringRunner.class) //底层用junit SpringJUnit4ClassRunner
@SpringBootTest(classes={SpringBoot04WebRestfulcurdApplication.class}) //启动整个springboot工程
@AutoConfigureMockMvc
public class MockMvcTestDemo { @Autowired
private MockMvc mockMvc;
@Test
public void apiTest() throws Exception { MvcResult mvcResult = mockMvc.perform( MockMvcRequestBuilders.get("/test/home") ).
andExpect( MockMvcResultMatchers.status().isOk() ).andReturn();
int status = mvcResult.getResponse().getStatus();
System.out.println(status); }}

package com.atguigu.springboot.controller.domain;import java.util.HashMap;
import java.util.Map;import javax.servlet.http.HttpServletRequest;import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.RestControllerAdvice;@RestControllerAdvice
public class CustomeExtHandler { private static final Logger LOG = LoggerFactory.getLogger(CustomeExtHandler.class); //捕获全局异常,处理所有不可知的异常
@ExceptionHandler(value = Exception.class)
//@ResponseBody
Object handleException(Exception e, HttpServletRequest request) {
LOG.error("url {}, msg {}", request.getRequestURL(), e.getMessage());
Map<String, Object> map = new HashMap<>();
map.put("code", 100);
map.put("msg", e.getMessage());
map.put("url", request.getRequestURL());
return map;
}
}

package com.atguigu.springboot.controller.domain;public class MyException extends RuntimeException { public MyException(String code, String msg) {
this.code = code;
this.msg = msg;
} private String code;
private String msg;
public String getCode() {
return code;
}
public void setCode(String code) {
this.code = code;
}
public String getMsg() {
return msg;
}
public void setMsg(String msg) {
this.msg = msg;
}}

package net.xdclass.demo.domain;import java.util.HashMap;
import java.util.Map;import javax.servlet.http.HttpServletRequest;import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.RestControllerAdvice;
import org.springframework.web.servlet.ModelAndView;@RestControllerAdvice
public class CustomExtHandler { private static final Logger LOG = LoggerFactory.getLogger(CustomExtHandler.class); //捕获全局异常,处理所有不可知的异常
@ExceptionHandler(value=Exception.class)
Object handleException(Exception e,HttpServletRequest request){
LOG.error("url {}, msg {}",request.getRequestURL(), e.getMessage());
Map<String, Object> map = new HashMap<>();
map.put("code", 100);
map.put("msg", e.getMessage());
map.put("url", request.getRequestURL());
return map;
} /**
* 功能描述：处理自定义异常
* @return
*/
@ExceptionHandler(value=MyException.class)
Object handleMyException(MyException e,HttpServletRequest request){
//进行页面跳转
// ModelAndView modelAndView = new ModelAndView();
// modelAndView.setViewName("error.html");
// modelAndView.addObject("msg", e.getMessage());
// return modelAndView; //返回json数据，由前端去判断加载什么页面
Map<String, Object> map = new HashMap<>();
map.put("code", e.getCode());
map.put("msg", e.getMsg());
map.put("url", request.getRequestURL());
return map; }}

package net.xdclass.demo.domain;/**
* 功能描述：自定义异常类
*
* <p> 创建时间：Apr 25, 2018 12:06:51 AM </p>
* <p> 作者：小D课堂</p>
*/
public class MyException extends RuntimeException { public MyException(String code, String msg) {
this.code = code;
this.msg = msg;
} private String code;
private String msg;
public String getCode() {
return code;
}
public void setCode(String code) {
this.code = code;
}
public String getMsg() {
return msg;
}
public void setMsg(String msg) {
this.msg = msg;
}}

package com.atguigu.springboot.controller;import com.atguigu.springboot.controller.domain.MyException;
import com.atguigu.springboot.controller.domain.User;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;@RestController
public class ExcptionController {
@RequestMapping("/test_ext")
public Object index(){
int i=1/0;
return new User(11,"pwd_123","phone123");
}
@RequestMapping("/my_ext")
public Object myexc(){
throw new MyException("500","my exception");
}
}

package net.xdclass.base_project;import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.builder.SpringApplicationBuilder;
import org.springframework.boot.web.servlet.support.SpringBootServletInitializer;@SpringBootApplication //一个注解顶下面3个
public class XdclassApplication extends SpringBootServletInitializer { @Override
protected SpringApplicationBuilder configure(SpringApplicationBuilder application) {
return application.sources(XdclassApplication.class);
} public static void main(String[] args) throws Exception {
SpringApplication.run(XdclassApplication.class, args);
}}