Java读取properties文件工具类并解决控制台中文乱码

1、建立properts文件（error.message.properties）

HTTP201= 请求成功并且服务器创建了新的资源

2、在spring-mvc.xml文件（applicationContext-mvc.xml）中配置properties工具类路径及读取properties文件的路径

<bean id="propertyConfigurer" class="com.yjlc.platform.utils.PropertyConfigurer"  >
   <property name="ignoreUnresolvablePlaceholders" value="true"/>
   <property name="ignoreResourceNotFound" value="true"/>
   <property name="locations">
      <list>
         <value>classpath:error.message.properties</value>
      </list>
   </property>
   <property name="fileEncoding" value="UTF-8"></property>
</bean>

3、建立properts读取工具类

package com.yjlc.platform.utils;

import org.springframework.beans.BeansException;
import org.springframework.beans.factory.config.ConfigurableListableBeanFactory;
import org.springframework.beans.factory.config.PropertyPlaceholderConfigurer;

import java.util.Properties;

/**
 * --------------------------------------------------------------
 * CopyRights(c)2018,YJLC
 * All Rights Reserved
 * <p>
 * FileName: PropertyConfigurer.java
 * Description:错误信息文件读取工具类
 * Author: cyb
 * CreateDate: 2019-01-18
 * --------------------------------------------------------------
 */
public class PropertyConfigurer extends PropertyPlaceholderConfigurer {
    private Properties props;       // 存取properties配置文件key-value结果

    @Override
    protected void processProperties(ConfigurableListableBeanFactory beanFactoryToProcess, Properties props)
            throws BeansException {
        super.processProperties(beanFactoryToProcess, props);
        this.props = props;

    }
//输入配置文件中的key 获取对应的值
    public String getProperty(String key){
        return  new String(props.getProperty(key));

    }

    public String getProperty(String key, String defaultValue) {
        return this.props.getProperty(key, defaultValue);
    }

    public Object setProperty(String key, String value) {
        return this.props.setProperty(key, value);
    }
}

4、建立对应的service及实现类

(1) Service接口（GetMessageInfoService ）

package com.yjlc.platform.upgrade.common.service;

import java.io.UnsupportedEncodingException;

/**
 * --------------------------------------------------------------
 * CopyRights(c)2018,YJLC
 * All Rights Reserved
 * <p>
 * FileName: GetMessageInfoService.java
 * Description:获取错误信息service
 * Author: cyb
 * CreateDate: 2019-01-18
 * --------------------------------------------------------------
 */
public interface GetMessageInfoService {

    /**
     * 第四种实现方式获取properties文件中指定key的value
     *
     * @param key
     *
     * @return
     */
    String getProperyByFourthWay(String key) throws UnsupportedEncodingException;

    /**
     * 第四种实现方式获取properties文件中指定key的value
     *
     * @param key
     *
     * @param defaultValue
     *
     * @return
     */
    String getProperyByFourthWay(String key, String defaultValue);

}

Service实现类

package com.yjlc.platform.upgrade.common.service.impl;

import com.yjlc.platform.upgrade.common.service.GetMessageInfoService;
import com.yjlc.platform.utils.PropertyConfigurer;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

/**
 * --------------------------------------------------------------
 * CopyRights(c)2018,YJLC
 * All Rights Reserved
 * <p>
 * FileName: PropertiesServiceImpl.java
 * Description:获取错误信息service实现类
 * Author: cyb
 * CreateDate: 2019-01-18
 * --------------------------------------------------------------
 */
@Service
public class GetMessageInfoServiceImpl implements GetMessageInfoService {

    @Autowired
    private PropertyConfigurer pc;

    @Override
    public String getProperyByFourthWay(String key) {
        return pc.getProperty(key);
    }

    @Override
    public String getProperyByFourthWay(String key, String defaultValue) {
        return pc.getProperty(key, defaultValue);
    }

}

5、调用测试

@Controller
@RequestMapping("/upInformation/")
public class UPInformationController {
    @Autowired
    GetMessageInfoService getMessageInfoService;

@RequestMapping("forwardInfo")
@ResponseBody
public Map<String,Object> forwardInfo(UPInformationComment informationComment,String status) throws UnsupportedEncodingException {
    Map<String,Object> map = new HashMap<>();

    String value= getMessageInfoService.getProperyByFourthWay("HTTP201");

}

}

6、控制台打印中文乱码问题解决

找到intellij idea安装目录，bin文件夹下面idea64.exe.vmoptions和idea.exe.vmoptions这两个文件，分别在这两个文件中添加：-Dfile.encoding=UTF-8
第二步：找到intellij idea的file---settings---Editor---FileEncodings的GlobalEncoding和ProjectEncoding和Default encoding for properties都配置成UTF-8
第三步：在部署Tomcat的VM options项中添加：-Dfile.encoding=UTF-8

第四步：重启Intellij idea即可解决乱码问题（一定要关闭idea重新打开）

此篇博客，本人参照了以下博主的内容，再根据自己的需求进行了整合，若需要查看详细内容，大家可以前往以下链接查看：https://www.cnblogs.com/hafiz/p/5876243.html#commentform

技术在于交流！

原文地址：https://www.cnblogs.com/chenyuanbo/p/10291186.html