详解使用Spring Boot开发Restful程序

<?xml version="1.0" encoding="utf-8"?>
<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.bluecoffee</groupid>
 <artifactid>mapp</artifactid>
 <version>1.0-snapshot</version>

 <parent>
  <groupid>org.springframework.boot</groupid>
  <artifactid>spring-boot-starter-parent</artifactid>
  <version>1.4.1.release</version>
  <relativepath /> <!-- lookup parent from repository -->
 </parent>

 <properties>
  <project.build.sourceencoding>utf-8</project.build.sourceencoding>
  <java.version>1.8</java.version>
 </properties>


 <dependencies>
  <dependency>
   <groupid>org.springframework.boot</groupid>
   <artifactid>spring-boot-starter-web</artifactid>
  </dependency>

  <dependency>
   <groupid>org.springframework.boot</groupid>
   <artifactid>spring-boot-starter-test</artifactid>
   <scope>test</scope>
  </dependency>
 </dependencies>

 <build>
  <plugins>
   <plugin>
    <groupid>org.springframework.boot</groupid>
    <artifactid>spring-boot-maven-plugin</artifactid>
   </plugin>
  </plugins>
 </build>
</project>

package com.yepit.mapp.rest;

import org.springframework.boot.autoconfigure.enableautoconfiguration;
import org.springframework.context.annotation.configuration;
import org.springframework.web.bind.annotation.*;

/**
 * created by qianlong on 16/7/20.
 */
@restcontroller
public class usercontroller {

 @requestmapping(value = "/users/{username}",method = requestmethod.get,consumes="application/json")
 public string getuser(@pathvariable string username, @requestparam string pwd){
  return "welcome,"+username;
 }}

package com.yepit.mapp;

import org.springframework.boot.springapplication;
import org.springframework.boot.autoconfigure.springbootapplication;

/**
 * created by qianlong on 16/7/20.
 */
@springbootapplication
public class mapprunapplication {

 public static void main(string[] args) {
  springapplication.run(mapprunapplication.class, args);
 }
}

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( ( )\\___ | '_ | '_| | '_ \\/ _` | \\ \\ \\ \\
 \\\\/ ___)| |_)| | | | | || (_| | ) ) ) )
 ' |____| .__|_| |_|_| |_\\__, | / / / /
 =========|_|==============|___/=/_/_/_/
 :: spring boot ::  (v1.3.3.release)

2016-07-20 16:49:43.334 info 2106 --- [   main] com.yepit.mapp.mapprunapplication  : starting mapprunapplication on bogon with pid 2106 (/users/qianlong/workspace/spring-boot-samples/target/classes started by qianlong in /users/qianlong/workspace/spring-boot-samples)
2016-07-20 16:49:43.338 info 2106 --- [   main] com.yepit.mapp.mapprunapplication  : no active profile set, falling back to default profiles: default
2016-07-20 16:49:43.557 info 2106 --- [   main] ationconfigembeddedwebapplicationcontext : refreshing org.springframework.boot.context.embedded.annotationconfigembeddedwebapplicationcontext@543e710e: startup date [wed jul 20 16:49:43 cst 2016]; root of context hierarchy
2016-07-20 16:49:44.127 info 2106 --- [   main] o.s.b.f.s.defaultlistablebeanfactory  : overriding bean definition for bean 'beannameviewresolver' with a different definition: replacing [root bean: class [null]; scope=; abstract=false; lazyinit=false; autowiremode=3; dependencycheck=0; autowirecandidate=true; primary=false; factorybeanname=org.springframework.boot.autoconfigure.web.errormvcautoconfiguration$whitelabelerrorviewconfiguration; factorymethodname=beannameviewresolver; initmethodname=null; destroymethodname=(inferred); defined in class path resource [org/springframework/boot/autoconfigure/web/errormvcautoconfiguration$whitelabelerrorviewconfiguration.class]] with [root bean: class [null]; scope=; abstract=false; lazyinit=false; autowiremode=3; dependencycheck=0; autowirecandidate=true; primary=false; factorybeanname=org.springframework.boot.autoconfigure.web.webmvcautoconfiguration$webmvcautoconfigurationadapter; factorymethodname=beannameviewresolver; initmethodname=null; destroymethodname=(inferred); defined in class path resource [org/springframework/boot/autoconfigure/web/webmvcautoconfiguration$webmvcautoconfigurationadapter.class]]
2016-07-20 16:49:44.658 info 2106 --- [   main] s.b.c.e.t.tomcatembeddedservletcontainer : tomcat initialized with port(s): 8080 (http)
2016-07-20 16:49:44.672 info 2106 --- [   main] o.apache.catalina.core.standardservice : starting service tomcat
2016-07-20 16:49:44.673 info 2106 --- [   main] org.apache.catalina.core.standardengine : starting servlet engine: apache tomcat/8.0.32
2016-07-20 16:49:44.759 info 2106 --- [ost-startstop-1] o.a.c.c.c.[tomcat].[localhost].[/]  : initializing spring embedded webapplicationcontext
2016-07-20 16:49:44.759 info 2106 --- [ost-startstop-1] o.s.web.context.contextloader   : root webapplicationcontext: initialization completed in 1207 ms
2016-07-20 16:49:44.972 info 2106 --- [ost-startstop-1] o.s.b.c.e.servletregistrationbean  : mapping servlet: 'dispatcherservlet' to [/]
2016-07-20 16:49:44.977 info 2106 --- [ost-startstop-1] o.s.b.c.embedded.filterregistrationbean : mapping filter: 'characterencodingfilter' to: [/*]
2016-07-20 16:49:44.978 info 2106 --- [ost-startstop-1] o.s.b.c.embedded.filterregistrationbean : mapping filter: 'hiddenhttpmethodfilter' to: [/*]
2016-07-20 16:49:44.978 info 2106 --- [ost-startstop-1] o.s.b.c.embedded.filterregistrationbean : mapping filter: 'httpputformcontentfilter' to: [/*]
2016-07-20 16:49:44.978 info 2106 --- [ost-startstop-1] o.s.b.c.embedded.filterregistrationbean : mapping filter: 'requestcontextfilter' to: [/*]
2016-07-20 16:49:45.184 info 2106 --- [   main] s.w.s.m.m.a.requestmappinghandleradapter : looking for @controlleradvice: org.springframework.boot.context.embedded.annotationconfigembeddedwebapplicationcontext@543e710e: startup date [wed jul 20 16:49:43 cst 2016]; root of context hierarchy
2016-07-20 16:49:45.251 info 2106 --- [   main] s.w.s.m.m.a.requestmappinghandlermapping : mapped "{[/users],methods=[get],consumes=[application/json]}" onto public java.lang.string com.yepit.mapp.rest.usercontroller.getuser(java.lang.string,java.lang.string)
2016-07-20 16:49:45.253 info 2106 --- [   main] s.w.s.m.m.a.requestmappinghandlermapping : mapped "{[/error]}" onto public org.springframework.http.responseentity<java.util.map<java.lang.string, java.lang.object>> org.springframework.boot.autoconfigure.web.basicerrorcontroller.error(javax.servlet.http.httpservletrequest)
2016-07-20 16:49:45.254 info 2106 --- [   main] s.w.s.m.m.a.requestmappinghandlermapping : mapped "{[/error],produces=[text/html]}" onto public org.springframework.web.servlet.modelandview org.springframework.boot.autoconfigure.web.basicerrorcontroller.errorhtml(javax.servlet.http.httpservletrequest,javax.servlet.http.httpservletresponse)
2016-07-20 16:49:45.275 info 2106 --- [   main] o.s.w.s.handler.simpleurlhandlermapping : mapped url path [/webjars/**] onto handler of type [class org.springframework.web.servlet.resource.resourcehttprequesthandler]
2016-07-20 16:49:45.275 info 2106 --- [   main] o.s.w.s.handler.simpleurlhandlermapping : mapped url path [/**] onto handler of type [class org.springframework.web.servlet.resource.resourcehttprequesthandler]
2016-07-20 16:49:45.306 info 2106 --- [   main] o.s.w.s.handler.simpleurlhandlermapping : mapped url path [/**/favicon.ico] onto handler of type [class org.springframework.web.servlet.resource.resourcehttprequesthandler]
2016-07-20 16:49:45.380 info 2106 --- [   main] o.s.j.e.a.annotationmbeanexporter  : registering beans for jmx exposure on startup
2016-07-20 16:49:45.462 info 2106 --- [   main] s.b.c.e.t.tomcatembeddedservletcontainer : tomcat started on port(s): 8080 (http)
2016-07-20 16:49:45.467 info 2106 --- [   main] com.yepit.mapp.mapprunapplication  : started mapprunapplication in 2.573 seconds (jvm running for 3.187)