Spring boot（Spring Boot 1.5.7.RELEASE）实践

1.    结构

1.     入口src/main/java

@SpringBootApplication注释: 主程序入口 DemoApplication, 可以通过直接运行该类来启动Spring Boot应用。

 

2.     配置src/main/resources

图片、 css 、JavaScript =》static

Web页面的模板文件 =》templates

3.     单元测试src/test

ü  解决Maven依赖库的问题

1. =》需要设置maven本地仓库 =》settings.xml中修改

C:\\Users\\Administrator\\.m2\\repository

2.eclipse指定settings.xml文件 ， 进入Window =》preferances=》Maven=》User Setting指定路径

hello world

Eclipse创建项目 tcloud-user-provider

 

配置依赖包

<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>4.0.0modelVersion>       <groupId>com.svw.tbox.tcloud.usergroupId>     <artifactId>tcloud-user-providerartifactId>     <version>0.0.1-SNAPSHOTversion>     <name>tcloud-user-providername>     <url>http://maven.apache.orgurl>       <parent>         <groupId>org.springframework.bootgroupId>         <artifactId>spring-boot-starter-parentartifactId>         <version>1.4.3.RELEASEversion>     parent>       <properties>         <project.build.sourceEncoding>UTF-8project.build.sourceEncoding>         1.8     properties>       <dependencies>         <dependency>             <groupId>org.apache.maven.pluginsgroupId>             <artifactId>maven-resources-pluginartifactId>             <version>2.6version>         dependency>         <dependency>             <groupId>org.springframework.bootgroupId>             <artifactId>spring-boot-starter-webartifactId>         dependency>           <dependency>             <groupId>com.alibabagroupId>             <artifactId>fastjsonartifactId>             <version>1.2.15version>         dependency>           <dependency>             <groupId>mysqlgroupId>             <artifactId>mysql-connector-javaartifactId>             <version>5.1.44version>         dependency>         <dependency>             <groupId>org.mybatis.spring.bootgroupId>             <artifactId>mybatis-spring-boot-starterartifactId>             <version>1.2.1version>         dependency>         <dependency>             <groupId>com.github.pagehelpergroupId>             <artifactId>pagehelperartifactId>             <version>4.1.0version>         dependency>           <dependency>             <groupId>org.springframework.cloudgroupId>             <artifactId>spring-cloud-starter-eurekaartifactId>         dependency>     dependencies>         <dependencyManagement>         <dependencies>             <dependency>                 <groupId>org.springframework.cloudgroupId>                 <artifactId>spring-cloud-dependenciesartifactId>                 <version>Camden.SR4version>                 <type>pomtype>                 <scope>importscope>             dependency>         dependencies>     dependencyManagement> project>

1.     创建Controller类

package com.svw.tbox.tcloud.user.provider.controller; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RestController;   /**  * @RestController = @Controller+@RequestBody  * @author Administrator  *  */ @RestController publicclass UserController {    /**     * 建立映射：     * http://127.0.0.1:8080/hello     * @return     */    @RequestMapping("/hello")    public String hello(){      return"你好";    } }

 

2.     创建main类

使用@SpringBootApplication指定这是一个SpringBoot应用程序。

package com.svw.tbox.tcloud.user.provider; import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication;   @SpringBootApplication publicclass ProviderApplication {    publicstaticvoid main(String[] args) {       SpringApplication.run(ProviderApplication.class, args);    } }

3.     运行

在main类中右击->run as -> java application 出现 如下代码 说明运行成功

Started ProviderApplication in 4.522 seconds (JVM running for 5.345)

4.     效果

访问Controller映射地址，出现如下返回结果就运行成功

1.    对象转json

1.     写model类

packagecom.svw.tbox.tcloud.user.provider.entity;   import java.math.BigDecimal;   publicclass User {      private Long id;    private String username;    private String name;    private Integer age;    private BigDecimal balance;      public User() {       super();    }      public User(Long id, String username, String name, Integer age, BigDecimal balance) {       super();       this.id = id;       this.username = username;       this.name = name;       this.age = age;       this.balance = balance;    }      public Long getId() {       returnthis.id;    }      publicvoid setId(Long id) {       this.id = id;    }      public String getUsername() {       returnthis.username;    }      publicvoid setUsername(String username) {       this.username = username;    }      public String getName() {       returnthis.name;    }      publicvoid setName(String name) {       this.name = name;    }      public Integer getAge() {       returnthis.age;    }      publicvoid setAge(Integer age) {       this.age = age;    }      public BigDecimal getBalance() {       returnthis.balance;    }      publicvoid setBalance(BigDecimal balance) {       this.balance = balance;    } }

 

2.     写Controller映射方法

packagecom.svw.tbox.tcloud.user.provider.controller; import java.math.BigDecimal; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RestController; importcom.svw.tbox.tcloud.user.provider.entity.User;   /**  * @RestController = @Controller+@RequestBody  * @author Administrator  *  */ @RestController publicclass UserController {    /**     * 建立映射：     * http://127.0.0.1:8000/hello     * @return     */    @RequestMapping("/hello")    public String hello(){      return"你好";    }       @RequestMapping("/getUser")    public User getUser(){       returnnew User(1L, "小般般", "胡话", 30, new BigDecimal(10000000.00));    } }

效果：