六、读取应用配置+日志配置

1、Environment

a>添加配置文件内容

test.msg=read config

b>创建控制器类

package com.yzh.boot.controller;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.core.env.Environment;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
@RestController
public class EnvReaderConfigController {
    
	@Autowired 
	private Environment env;
	@RequestMapping("/testEnv")
	public String testEnv() {
    
		return "方法一：使用Environment类读取配置文件中的数据" + env.getProperty("test.msg") ;
	}
}

2、@Value

a>创建控制器类

package com.yzh.boot.controller;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
@RestController
public class ValueReaderConfigController {
    
	@Value("${test.msg}")
    private String msg;
	@RequestMapping("/testValue")
	public String testValue() {
    
		return "方法二：使用@Value注解读取配置文件中的数据" + msg;
	}
}

3、@ConfigurationProperties

a>添加配置文件内容

obj.sname=叶子航
obj.sage=20

b>建立配置文件与对象的映射关系

package com.yzh.boot.model;
import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;
import lombok.ToString;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.stereotype.Component;
@Component//使用Component注解，声明一个组件，被控制器依赖注入
@ConfigurationProperties(prefix = "obj")//obj为配置文件中key的前缀
@Data
@AllArgsConstructor
@NoArgsConstructor
@ToString
public class StudentProperties {
    
	private String sname;
	private int sage;
}

c>创建控制器类

package com.yzh.boot.controller;
import com.yzh.boot.model.StudentProperties;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
@RestController
public class ConfigurationPropertiesController {
    
	 @Autowired
	 StudentProperties studentProperties;
	 @RequestMapping("/testConfigurationProperties")
	 public String  testConfigurationProperties() {
    
		 return studentProperties.toString();
	 }
}

4、@PropertySource

a>创建配置文件
ok.properties

your.msg=hello.

test.properties

my.msg=test PropertySource

b>创建控制器类

package com.yzh.boot.controller;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.PropertySource;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
@RestController
@PropertySource({
    "test.properties","ok.properties"})
public class PropertySourceValueReaderOhterController {
    
	@Value("${my.msg}")
    private String mymsg;
	@Value("${your.msg}")
    private String yourmsg;
	@RequestMapping("/testProperty")
	public String testProperty() {
    
		return "其他配置文件test.properties：" + mymsg + "<br>" + "其他配置文件ok.properties：" + yourmsg;
	}
}

5、日志配置

package com.yzh.boot.controller;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
@RestController
public class LogTestController {
    
	private Log log = LogFactory.getLog(LogTestController.class);
	@RequestMapping("/testLog")
	public String testLog() {
    
		log.info("测试日志");
		return "测试日志" ;
	}
}

#输出日志到文件，默认输出到项目的工程目录下
logging.file.name=my.log

6、处理浏览器乱码

#处理浏览器乱码（按顺序配置）
server.tomcat.uri-encoding=UTF-8
server.servlet.encoding.force=true
server.servlet.encoding.charset=UTF-8
server.servlet.encoding.enabled=true