Springboot配置文件之properties

打开IDEA,创建Springboot项目。

其中pom.xml内容如下：

<?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.zhenqi</groupId>    <artifactId>study-springboot</artifactId>    <version>0.0.1-SNAPSHOT</version>    <packaging>jar</packaging>    <name>springboot_property</name>    <description>Demo project for Spring Boot</description>    <parent>        <groupId>org.springframework.boot</groupId>        <artifactId>spring-boot-starter-parent</artifactId>        <version>1.5.4.RELEASE</version>        <relativePath/> <!-- lookup parent from repository -->    </parent>    <properties>        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>        <java.version>1.7</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>        <dependency>            <groupId>org.springframework.boot</groupId>            <artifactId>spring-boot-devtools</artifactId>        </dependency>    </dependencies>    <build>        <plugins>            <plugin>                <groupId>org.springframework.boot</groupId>                <artifactId>spring-boot-maven-plugin</artifactId>            </plugin>        </plugins>    </build></project>

然后在创建一个Java bean对象。User.java如下：

package com.zhenqi.study.entity;import java.util.Date;/** * Created by wuming on 2017/7/14. */public class User {    private int id;    private String name;    private int age;    private Date birDate;    public int getId() {        return id;    }    public void setId(int id) {        this.id = id;    }    public String getName() {        return name;    }    public void setName(String name) {        this.name = name;    }    public int getAge() {        return age;    }    public void setAge(int age) {        this.age = age;    }    public Date getBirDate() {        return birDate;    }    public void setBirDate(Date birDate) {        this.birDate = birDate;    }}

最后创建Controller层，IndexController.java如下：

package com.zhenqi.study.controller;import com.zhenqi.study.entity.User;import org.springframework.beans.factory.annotation.Value;import org.springframework.web.bind.annotation.PathVariable;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.bind.annotation.RequestParam;import org.springframework.web.bind.annotation.RestController;import java.util.Date;import java.util.HashMap;/** * Created by wuming on 2017/7/14. */@RestController@RequestMapping(value = "/index")public class IndexController {    @Value(value = "${study.secret}")    private String secret;    @Value(value = "${study.number}")    private int id;    @Value(value = "${study.number}")    private int age;    @Value(value = "${study.desc}")    private String desc;    @RequestMapping    public String index() {        return "hello springboot!";    }    // @RequestParam 简单类型的绑定，可以出来get和post    @RequestMapping(value = "/get")    public HashMap<String, Object> get(@RequestParam String name) {        HashMap<String, Object> map = new HashMap<String, Object>();        map.put("title", "hello zhenqi");        map.put("name", name);        map.put("age",age);        map.put("secret", secret);        map.put("id", id);        map.put("desc", desc);        return map;    }    // @PathVariable 获得请求url中的动态参数    @RequestMapping(value = "/get/{id}/{name}/{age}")    public User getUser(@PathVariable int id, @PathVariable String name,@PathVariable int age) {        User user = new User();        user.setId(id);        user.setName(name);        user.setAge(age);        user.setBirDate(new Date());        return user;    }}

其配置文件 application.properties

#32位随机字符串study.secret=${random.value}#int类型的随机数字study.number=${random.int}study.name=zhenqi-study#属性占位符属性study.desc=${study.name} is a domain name#应用端口server.port=8090#时间格式化spring.jackson.date-format=yyyy-MM-dd HH:mm:ss#时区设置spring.jackson.time-zone=Asia/Shanghai

run 这个类。

浏览器访问效果如下：