SpringBoot自学笔记（二）

xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 

xsi:schemaLocation="

http://maven.apache.org/POM/4.0.0

http://maven.apache.org/xsd/maven-4.0.0.xsd">

<modelVersion>4.0.0</modelVersion>

<groupId>yan.li</groupId>

<artifactId>spring-boot-hello1</artifactId>

<version>0.0.1-SNAPSHOT</version>

<!--
引入spring-boot-start-parent 依赖管理，引入以后在申明其它dependency的时候就不需要version了
-->

<parent>

<groupId>org.springframework.boot</groupId>

<artifactId>spring-boot-starter-parent</artifactId>

<version>1.3.3.RELEASE</version>

</parent>

<dependencies>

<!--
引入spring-boot-starter-web 包含了spring
webmvc和tomcat等web开发的特性
-->

<dependency>

<groupId>org.springframework.boot</groupId>

<artifactId>spring-boot-starter-web</artifactId>

</dependency>

<!--
引入fastjson -->

<dependency>

<groupId>com.alibaba</groupId>

<artifactId>fastjson</artifactId>

<version>1.2.7</version>

</dependency>

</dependencies>

<!--
如果我们要直接Main启动spring，那么以下plugin必须要添加，否则是无法启动的。如果使用maven 的spring-boot:run的话是不需要此配置的
-->

<build>

<plugins>

<plugin>

<groupId>org.springframework.boot</groupId>

<artifactId>spring-boot-maven-plugin </artifactId>

</plugin>

<dependencies>

<!--springloaded hot deploy
热部署-->

<dependency>

<groupId>org.springframework</groupId>

<artifactId>springloaded</artifactId>

<version>1.2.4.RELEASE</version>

</dependency>

</dependencies>

<executions>

<execution>

<goals>

<goal>repackage</goal>

</goals>

<configuration>

<classifier>exec</classifier>

</configuration>

</execution>

</executions>

</plugins>

</build>

</project>

import org.springframework.web.bind.annotation.RequestMapping;

import org.springframework.web.bind.annotation.RestController;

import com.alibaba.fastjson.JSONObject;

import yan.li.jsonPojo.Student;

@RestController

@RequestMapping("/demo")

public class StudentController {

@RequestMapping("/getFastJson")

public String getFastJson() {

Student demo =
new Student();

demo.setId(1l);

demo.setName("张三");

return JSONObject.toJSONString(demo);

}

}

import javax.servlet.http.HttpServletRequest;

import org.springframework.web.bind.annotation.ControllerAdvice;

import org.springframework.web.bind.annotation.ExceptionHandler;

@ControllerAdvice

public class GlobalDefaultExceptionHandler {

@ExceptionHandler(value = Exception.class)

public void defaultErrorHandler(HttpServletRequest
req, Exception
e) {

//e.printStackTrace();

System.out.println("异常捕获到了"+e.toString());

}

}

import org.springframework.web.bind.annotation.RequestMapping;

import org.springframework.web.bind.annotation.RestController;

import com.alibaba.fastjson.JSONObject;

import yan.li.jsonPojo.Student;

/**

 * @author Liyan

 * @date 2016年11月24日
下午2:27:43

 */

@RestController

@RequestMapping("/demo")

public class StudentController {

@RequestMapping("/getFastJson")

public String getFastJson() {

Student demo =
new Student();

demo.setId(1l);

demo.setName("张三");

int exception = 1/0;
//除零异常

return JSONObject.toJSONString(demo);

}

}