Java学习-022-Properties 文件数据写入

Properties 配置文件写入主要通过 Properties.setProperty 和 Properties.store 两个方法，此文以一个简单的 properties 文件写入源码做示例。

小二上码。。。若有不足之处，敬请大神指正，不胜感激！

Properties 文件写入源码如下所示：

     /**
      * @function write data to text file by Properties
      *
      * @author Aaron.ffp
      * @version V1.0.0: autoUISelenium main.java.aaron.java.tools FileUtils.java propertiesWrite, 2014-11-20 16:45:42 Exp $
      *
      * @param filename : full path for config file
      * @param author   : creator
      * @param configs  : file contents
      * @return boolean
      */
     public boolean propertiesWrite(String filename, String author, ArrayList<String[]> configs){
         Properties properties = new Properties();
         boolean success = false;

         /* 参数校验: 参数非法时, 抛出参数非法异常 */
         if (filename == null || "".equals(filename) || author == null || "".equals(author) || configs.isEmpty()) {
             throw new IllegalArgumentException();
         }

         try {
             FileOutputStream fos = new FileOutputStream(filename);

             for (String[] row : configs) {
                 properties.setProperty(row[0].toString().trim(), row[1].toString().trim());
             }

             properties.store(fos, "author:" + author);
             fos.close();

             success = true;
         } catch (IOException ioe) {
             this.message = "文件 {" + filename + "} 写入失败！";
             this.logger.error(this.message, ioe);
         }

         return success;
     }

Properties 文件写入源码

测试源码如下所示：

     /**
      * Test : Store data to properties file
      *
      * @author Aaron.ffp
      * @version V1.0.0: autoUISelenium test.java.aaron.java.tools FileUtilsTest.java test_propertiesWrite, 2014-11-20 16:49:42 Exp $
      *
      */
     public void test_propertiesWrite(){
         this.message = "\n\n\nTEST：FileUtils.propertiesWrite(String filename, String author, ArrayList<String[]> configs)";
         this.logger.debug(this.message);

         this.fu = new FileUtils();
         String filename = this.constantslist.PROJECTHOME + this.constantslist.FILESEPARATOR +
                           "testng-temp" + this.constantslist.FILESEPARATOR + "test_propertiesWrite.properties";

         ArrayList<String[]> configs = new ArrayList<String[]>();

         String author = "Aaron.ffp";

         for (int i = 0; i < 10; i++) {
             String[] row = new String[2];

             row[0] = i + "";
             row[1] = "The row number is " + (i + 1);

             configs.add(i, row);
         }

         if (this.fu.propertiesWrite(filename, author, configs)) {
             Assert.assertEquals(this.fu.propertiesGetValue(this.fu.propertiesRead(filename), "2"), "The row number is 3", "Test case failed.");
         } else {
             this.message = "Test case failed, please check the data file : " + filename;
             Assert.fail(this.message);
         };
     }

测试源码

测试源码中调用的 propertiesRead(String) 方法请参阅：获取 Properties 配置文件内容

测试源码中调用的 propertiesGetValue(Properties, key)方法请参阅：获取 Properties 配置文件中对应的配置项

上述方法中调用的 propertiesKeyIsExist(Properties, key)方法请参阅：判断 Properties 配置文件中是否存在对应的配置项

测试执行结果如下所示：

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" 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测试生成的  文件内容如下所示：

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" 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至此， Java学习-022-Properties 文件数据写入 顺利完结，希望此文能够给初学 Java 的您一份参考。

最后，非常感谢亲的驻足，希望此文能对亲有所帮助。热烈欢迎亲一起探讨，共同进步。非常感谢！ ^_^