java讀取Properties文件及賦值

懶得整理了，直接復制我工程里的代碼：

第一個讀取文件的類可以直接復制，

不復制的話，在下面取值和賦值部分的代碼new EmailProperRead(systemType).properties根據自己情況修改。

一、讀取文件的類EmailProperRead（一個完整文件，可以直接復制使用）：

   
   
  
  
          
 
           
 
            
 
             
 
            
 
            
 
             
 
              package com.uniquedu.util; 
             
 
            
 
           
 
            
 
             
 
            
 
            
 
             
 
             
 
            
 
           
 
            
 
             
 
            
 
            
 
             
 
              import java.io.File; 
             
 
            
 
           
 
            
 
             
 
            
 
            
 
             
 
              import java.io.FileInputStream; 
             
 
            
 
           
 
            
 
             
 
            
 
            
 
             
 
              import java.util.Properties; 
             
 
            
 
           
 
            
 
             
 
            
 
            
 
             
 
             
 
            
 
           
 
            
 
             
 
            
 
            
 
             
 
              import javax.servlet.http.HttpServletRequest; 
             
 
            
 
           
 
            
 
             
 
            
 
            
 
             
 
             
 
            
 
           
 
            
 
             
 
            
 
            
 
             
 
              import org.springframework.web.context.request.RequestContextHolder; 
             
 
            
 
           
 
            
 
             
 
            
 
            
 
             
 
              import org.springframework.web.context.request.ServletRequestAttributes; 
             
 
            
 
           
 
            
 
             
 
            
 
            
 
             
 
             
 
            
 
           
 
            
 
             
 
            
 
            
 
             
 
             
 
            
 
           
 
            
 
             
 
            
 
            
 
             
 
              public 
              class EmailProperRead { 
             
 
            
 
           
 
            
 
             
 
            
 
            
 
             
 
              public String iniPath = 
              "/WEB-INF/systemConfig.Properties"; 
              //文件路徑 
             
 
            
 
           
 
            
 
             
 
            
 
            
 
             
 
              public Properties properties = 
              new Properties(); 
             
 
            
 
           
 
            
 
             
 
            
 
            
 
             
 
              @SuppressWarnings( 
              "deprecation") 
             
 
            
 
           
 
            
 
             
 
            
 
            
 
             
 
              public EmailProperRead() throws Exception{ 
             
 
            
 
           
 
            
 
             
 
            
 
            
 
             

               HttpServletRequest request = ((ServletRequestAttributes)RequestContextHolder.getRequestAttributes()).getRequest(); 
             
 
            
 
           
 
            
 
             
 
            
 
            
 
             
 
             
 
            
 
           
 
            
 
             
 
            
 
            
 
             

               iniPath = request.getRealPath( 
              "/")+iniPath; 
             
 
            
 
           
 
            
 
             
 
            
 
            
 
             
 
             
 
            
 
           
 
            
 
             
 
            
 
            
 
             

               File file = 
              new File(iniPath); 
             
 
            
 
           
 
            
 
             
 
            
 
            
 
             
 
              if(!file.exists()){ 
             
 
            
 
           
 
            
 
             
 
            
 
            
 
             

               file.createNewFile(); 
             
 
            
 
           
 
            
 
             
 
            
 
            
 
             

               } 
             
 
            
 
           
 
            
 
             
 
            
 
            
 
             

               properties.load( 
              new FileInputStream(iniPath)); 
             
 
            
 
           
 
            
 
             
 
            
 
            
 
             

               } 
             
 
            
 
           
 
            
 
             
 
            
 
            
 
             
 
             
 
            
 
           
 
            
 
             
 
            
 
            
 
             

               } 
             
 
            
 
          
  
  
 
 
         

二、取值：

   
   
  
  
          
 
           
 
            
 
             
 
            
 
            
 
             

               Properties props = 
              new Properties(); 
              // 獲取系統環境 
             
 
            
 
           
 
            
 
             
 
            
 
            
 
             
 
              //獲取郵箱配置信息 
             
 
            
 
           
 
            
 
             
 
            
 
            
 
             
 
              final Properties properties = 
              new EmailProperRead().properties; 
             
 
            
 
           
 
            
 
             
 
            
 
            
 
             
 
              //發送郵件時顯示的發件人名稱 
             
 
            
 
           
 
            
 
             
 
            
 
            
 
             

               String personalName = properties.getProperty( 
              "emailName"); 
             
 
            
 
           
 
            
 
             
 
            
 
            
 
             
 
              // 發件人的郵箱用戶名 
             
 
            
 
           
 
            
 
             
 
            
 
            
 
             
 
              final String usernames = properties.getProperty( 
              "emailAddress"); 
             
 
            
 
           
 
            
 
             
 
            
 
            
 
             
 
              // 發件人的郵箱密碼 
             
 
            
 
           
 
            
 
             
 
            
 
            
 
             
 
              final String passwords = properties.getProperty( 
              "emailPaswd"); 
             
 
            
 
           
 
            
 
             
 
            
 
            
 
             
 
              // 郵箱服務器 
             
 
            
 
           
 
            
 
             
 
            
 
            
 
             

               String host = properties.getProperty( 
              "smtpAddress"); 
             
 
            
 
           
 
            
 
             
 
            
 
            
 
             
 
              //郵件主題 
             
 
            
 
           
 
            
 
             
 
            
 
            
 
             

               String mail_subject = properties.getProperty( 
              "emailTheme"); 
             
 
            
 
          
  
  
 
 
         

三、賦值並保存文件：

   
   
  
  
          
 
           
 
            
 
             
 
            
 
            
 
             

               Properties properties = 
              new EmailProperRead().properties; 
             
 
            
 
           
 
            
 
             
 
            
 
            
 
             
 
              //發送郵件時顯示的發件人名稱 
             
 
            
 
           
 
            
 
             
 
            
 
            
 
             

               properties.setProperty( 
              "emailName", request.getParameter( 
              "emailName")); 
             
 
            
 
           
 
            
 
             
 
            
 
            
 
             
 
              //發件人的郵箱地址 
             
 
            
 
           
 
            
 
             
 
            
 
            
 
             

               properties.setProperty( 
              "emailAddress", request.getParameter( 
              "emailAddress")); 
             
 
            
 
           
 
            
 
             
 
            
 
            
 
             
 
              //發件人的郵箱密碼 
             
 
            
 
           
 
            
 
             
 
            
 
            
 
             

               properties.setProperty( 
              "emailPaswd", request.getParameter( 
              "emailPaswd")); 
             
 
            
 
           
 
            
 
             
 
            
 
            
 
             
 
              //郵箱服務器 
             
 
            
 
           
 
            
 
             
 
            
 
            
 
             

               properties.setProperty( 
              "smtpAddress", request.getParameter( 
              "smtpAddress")); 
             
 
            
 
           
 
            
 
             
 
            
 
            
 
             
 
              //郵件主題 
             
 
            
 
           
 
            
 
             
 
            
 
            
 
             

               properties.setProperty( 
              "emailTheme", request.getParameter( 
              "emailTheme")); 
             
 
            
 
           
 
            
 
             
 
            
 
            
 
             

               properties.store( 
              new FileOutputStream( 
              new EmailProperRead(systemType).iniPath), 
              "");