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
<localRepository>C:\\Users\\Administrator\\.m2\\repository</localRepository>
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
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<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.svw.tbox.tcloud.user</groupId> <artifactId>tcloud-user-provider</artifactId> <version>0.0.1-SNAPSHOT</version> <name>tcloud-user-provider</name> <url>http://maven.apache.org</url>
<parent><!-- 有parent，下面的dependency可以不用加版本号 --> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>1.4.3.RELEASE</version> </parent>
<properties> <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> <java.version>1.8</java.version> </properties>
<dependencies> <dependency> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-resources-plugin</artifactId> <version>2.6</version> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency>
<dependency> <groupId>com.alibaba</groupId> <artifactId>fastjson</artifactId> <version>1.2.15</version> </dependency>
<dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <version>5.1.44</version> </dependency> <dependency> <groupId>org.mybatis.spring.boot</groupId> <artifactId>mybatis-spring-boot-starter</artifactId> <version>1.2.1</version> </dependency> <dependency> <groupId>com.github.pagehelper</groupId> <artifactId>pagehelper</artifactId> <version>4.1.0</version> </dependency>
<dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-starter-eureka</artifactId> </dependency> </dependencies> <!-- 引入spring cloud的依赖 --> <dependencyManagement> <dependencies> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-dependencies</artifactId> <version>Camden.SR4</version> <type>pom</type> <scope>import</scope> </dependency> </dependencies> </dependencyManagement> </project> |
1. 创建Controller类
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package com.svw.tbox.tcloud.user.provider.controller; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RestController;
/** * @RestController = @Controller[email protected] * @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。
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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
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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
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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[email protected] * @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)); } }
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