基于Spring4的全注解实现Restful开发

[Author]: kwu

全注解实现Spring Restful开发，restful提供了快速的交互形式，以json的为数据传递的格式。

1、Restful控制类实现，RequestMapping设置访问restful的路径，RequestParam设置参数的默认值

 package com.hexun.restful;

 import org.springframework.web.bind.annotation.ControllerAdvice;
 import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.RequestParam;
 import org.springframework.web.bind.annotation.RestController;
 import org.springframework.web.servlet.mvc.method.annotation.AbstractJsonpResponseBodyAdvice;

 import com.hexun.bean.CharsForPvuvip;
 import com.hexun.dao.ChartDao;


 @RestController
 public class RestfulController {

     @ControllerAdvice
     static class JsonpAdvice extends AbstractJsonpResponseBodyAdvice {
         public JsonpAdvice() {
             super("callback");
         }
     }

     @RequestMapping("/pv")
     public CharsForPvuvip getPvuvipByday(@RequestParam(value = "limit", defaultValue = "15") int limit) {
         CharsForPvuvip data = new CharsForPvuvip();
         try {
             data = ChartDao.getPvuvip(limit);
         } catch (Exception e) {
             e.printStackTrace();
         }
         return data;
     }
 }

省略了业务的DAO类，这里根据不同的需求来实现

2、POJO类

 package com.hexun.bean;


 public class CharsForPvuvip {
     private String[] titles;
     private String[] days;
     private Integer[] uvs;
     private Integer[] pvs;
     private Integer[] ipcnts;

     public String[] getTitles() {
         return titles;
     }

     public void setTitles(String[] titles) {
         this.titles = titles;
     }

     public String[] getDays() {
         return days;
     }

     public void setDays(String[] days) {
         this.days = days;
     }

     public Integer[] getUvs() {
         return uvs;
     }

     public void setUvs(Integer[] uvs) {
         this.uvs = uvs;
     }

     public Integer[] getPvs() {
         return pvs;
     }

     public void setPvs(Integer[] pvs) {
         this.pvs = pvs;
     }

     public Integer[] getIpcnts() {
         return ipcnts;
     }

     public void setIpcnts(Integer[] ipcnts) {
         this.ipcnts = ipcnts;
     }

 }

3、程序入口

 package com.hexun.client;

 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
 import org.springframework.context.annotation.ComponentScan;

 @ComponentScan({"com.hexun.restful"})
 @EnableAutoConfiguration
 public class Application {

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

注解@ComponentScan 指定了控制类的路径，如果不指定spring就在当前路径扫描

4、pom.xml文件，依赖管理与用的是maven

 <project xmlns="http://maven.apache.org/POM/4.0.0" 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>com.ganymede</groupId>
     <artifactId>restful</artifactId>
     <version>0.0.1-SNAPSHOT</version>

     <name>restful</name>
     <url>http://maven.apache.org</url>

     <properties>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <java.version>1.7</java.version>
     </properties>

     <parent>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-starter-parent</artifactId>
         <version>1.2.3.RELEASE</version>
     </parent>

     <dependencies>
         <dependency>
             <groupId>org.springframework.boot</groupId>
             <artifactId>spring-boot-starter-web</artifactId>
         </dependency>
         <dependency>
                 <groupId>mysql</groupId>
                 <artifactId>mysql-connector-java</artifactId>
                 <version>5.1.26</version>
         </dependency>
     </dependencies>

     <build>
         <plugins>
             <plugin>
                 <groupId>org.springframework.boot</groupId>
                 <artifactId>spring-boot-maven-plugin</artifactId>
             </plugin>
             <plugin>
                 <artifactId>maven-assembly-plugin</artifactId>
                     <configuration>
                         <archive>
                             <manifest>
                                 <mainClass>com.hexun.client.Application</mainClass>
                             </manifest>
                         </archive>
                         <descriptorRefs>
                             <descriptorRef>jar-with-dependencies</descriptorRef>
                         </descriptorRefs>
                     </configuration>
             </plugin>
         </plugins>
     </build>

 </project>

5、打包运行jar，在源码路径中输入

 mvn assembly:assembly

6、运行jar执行，参数 --server.port=9088 为指定restful服务的端口

 nohup java -jar restful-0.0.1-SNAPSHOT.jar --server.port=9088 2>&1 > restful.log &

运行截图如下：

restful 浏览器直接访问返回json数据，前台显示UI获得数据后，以图表展示给用户。