spring boot 学习--07---配置文件处理-02

接上篇http://blog.csdn.net/javastudyr/article/details/52526220我们继续来写我们自定义配置文件处理

（1）第三种配置文件处理,利用@bean 来读取配置文件

1. 新增config2

package com.springboot.study.config;

/**
* 自定义配置
* @author like
*
*/
public class Config2 {
private String name;
private String gender;
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getGender() {
return gender;
}
public void setGender(String gender) {
this.gender = gender;
}
@Override
public String toString() {
return "Config [name=" + name + ", gender=" + gender + "]";
}

}

在启动类中加载bean,这个也可以在其他类中，一般来说在启动类中加载比较好管理，或者在配置类中加载也是不错的，这里我们在启动类中添加配置。

package com.springboot.study;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.context.annotation.Bean;

import com.springboot.study.config.Config2;

/**
* 启动主类
* @author like
*
*/
@SpringBootApplication
public class ConfigApp {
@Bean
@ConfigurationProperties(prefix="test")
public Config2 getConfig(){
return new Config2();
}

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

在controller中新增方法来测试这个配置是否生效

package com.springboot.study.controller;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import com.springboot.study.config.Config;
import com.springboot.study.config.Config2;

/**
* 自定义配置文件读取控制类
* @author like
*
*/
@RestController
public class ConfigController {
@Value(value="${test.name}")
private String test_Name;
@Value(value="${test.gender}")
private String test_gender;
@Value(value="${test.default:defaultValue}")
private String test_dafault;
@Autowired
private Config config;
@Autowired
private Config2 config2;

@RequestMapping(value="/readApplicationConfigByValue")
public String readApplicationConfigByValue(){

return test_Name + " : " + test_gender;
}
@RequestMapping(value= "readDefaultValue")
public String readDefaultValue(){
return test_dafault;
}
@RequestMapping("/readConfigByBean")
public String readConfigByBean(){
return config.toString();
}

@RequestMapping("/readConfigByBean2")
public String readConfigByBean2(){
return config2.toString();
}

}

测试 ，访问http://localhost:8080/readConfigByBean2

结果



（2）第四种，读取不在application.properties中的自定义配置文件

1.在src/main/resources中创建config文件夹，再创建config.properties文件

2.增加以下内容

test.name=test3

test.gender=male3

3.新增config3

package com.springboot.study.config;

import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.stereotype.Component;

/**
* 自定义配置
* @author like
*
*/
@Component
@ConfigurationProperties(prefix="test",locations="classpath:config/config.properties")
public class Config3 {
private String name;
private String gender;
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getGender() {
return gender;
}
public void setGender(String gender) {
this.gender = gender;
}
@Override
public String toString() {
return "Config [name=" + name + ", gender=" + gender + "]";
}

}

（3）在controller中新增方法来测试自定义读取配置文件是否正确

package com.springboot.study.controller;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import com.springboot.study.config.Config;
import com.springboot.study.config.Config2;
import com.springboot.study.config.Config3;

/**
* 自定义配置文件读取控制类
* @author like
*
*/
@RestController
public class ConfigController {
@Value(value="${test.name}")
private String test_Name;
@Value(value="${test.gender}")
private String test_gender;
@Value(value="${test.default:defaultValue}")
private String test_dafault;
@Autowired
private Config config;
@Autowired
private Config2 config2;
@Autowired
private Config3 config3;

@RequestMapping(value="/readApplicationConfigByValue")
public String readApplicationConfigByValue(){

return test_Name + " : " + test_gender;
}
@RequestMapping(value= "readDefaultValue")
public String readDefaultValue(){
return test_dafault;
}
@RequestMapping("/readConfigByBean")
public String readConfigByBean(){
return config.toString();
}

@RequestMapping("/readConfigByBean2")
public String readConfigByBean2(){
return config2.toString();
}

/**
* 读取自定义在config文件里config.properties的配置
* @return
*/
@RequestMapping(value="/readConfigByCustomProp")
public String readConfigByCustomProp(){
return config3.toString();
}

}

（4）访问：http://localhost:8080/readConfigByCustomProp

（5）结果：



到这里自定义配置文件就结束了，下面在补充一点对自定义文件校验的注解

1.新增config4

package com.springboot.study.config;

import javax.validation.constraints.Max;
import javax.validation.constraints.NotNull;

import org.hibernate.validator.constraints.NotBlank;
import org.hibernate.validator.constraints.URL;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.stereotype.Component;

/**
* 自定义配置
* @author like
*
*/
@Component
@ConfigurationProperties(prefix="test")
public class Config4 {
@NotNull
private String name;
@NotBlank
private String gender;
@URL
private String url;
@Max(value=100 ,message="最大不能超过100")
private int num;
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getGender() {
return gender;
}
public void setGender(String gender) {
this.gender = gender;
}
public String getUrl() {
return url;
}
public void setUrl(String url) {
this.url = url;
}
public int getNum() {
return num;
}
public void setNum(int num) {
this.num = num;
}

}

2.在application中配置如下数据

test.name=test

test.gender=male

test.url=123

test.num=123

3.启动

4.结果：

Description:

Binding to target com.springboot.study.config.Config4@70aa2 failed:

Property: test.url
Value: 123
Reason: 需要是一个合法的URL

Property: test.num
Value: 123
Reason: 最大不能超过100

Action:

Update your application's configuration

到此springboot自定义配置文件全篇结束.