1 /** 2 * Properties类测试 3 * User: 支胜勇 4 */ 5 public class Test4 { 6     7         public static void main(String args[]) throws IOException { 8             9             System.out.println("------------测试Properties-------------");10             11             Properties prop=new Properties();12             prop.put("姓名", "支胜勇");13             prop.put("爱好", "编程和旅游");14             prop.put("籍贯", "贵州毕节");15             16             createProperFile("E:\\tt.properties",prop);17             18             readProperFile("E:\\tt.properties");19             20             Map<String,String> map=new HashMap<String,String>();21             map.put("性别", "男");22             map.put("学历", "本科");23             modifyProperFile("E:\\tt.properties",map);24         } 25 26         27         /***28          * 创建properties文件，并向其写入键值对，包括properties和xml格式29          * @param fileName30          * @param keyValues31          */32         public static void createProperFile(String fileName,Properties prop){33              System.out.println("------------创建Properties文件----------");34             //创建properties文件35              36             File properFile=new File(fileName.substring(0,fileName.lastIndexOf("."))+".properties");37             if(!properFile.exists()){38                 try {39                     properFile.createNewFile();40                 } catch (IOException e) {41                     // TODO Auto-generated catch block42                     System.err.print("创建文件失败！");43                     return;44                 }45             }46             47             try {48                 49                 FileWriter fw=new FileWriter(properFile);50                 prop.store(fw, "我是通过properties写进来的");51                 OutputStream fw1=new FileOutputStream(fileName.substring(0,fileName.lastIndexOf("."))+".xml");52                 prop.storeToXML(fw1, "我是通过properties写进来的");53                 fw1.close();54                 fw.close();55                 56                 System.out.println("------------创建Properties文件成功----------");57             } catch (IOException e) {58                 // TODO Auto-generated catch block59                 System.err.print("向properties文件写入数据失败！");60                 return;61             }62         }63         64         65         /***66          * 读取properties文件67          * @param properFileName68          * @return69          * @throws IOException70          */71         public static Properties readProperFile(String properFileName) throws IOException{72             73             File file =new File(properFileName);74              Properties prop=null;75             if(!file.exists()){76                 77                 System.out.print("文件不存在！");78                 return null;79             }80             81             try {82                 System.out.println("------读取properties文件-------");83                 FileReader fr=new FileReader(file);84                  //创建一个Properties容器 85                 prop = new Properties(); 86                 //从流中加载properties文件信息 87                 prop.load(fr); 88                 //循环输出配置信息 89                 for (Object key : prop.keySet()) { 90                         System.out.println(key + "=" + prop.get(key)); 91                 }92                 93                 94             } catch (FileNotFoundException e) {95                 // TODO Auto-generated catch block96                 System.out.print("文件不存在！");97             }98             99             return prop;
100         }
101
102
103
104         /***
105          * 修改properties文件，并持久化保存
106          * @param properFileName
107          * @param map
108          * @throws IOException
109          */
110         Public static void modifyProperFile(String properFileName,Map<String,String> map) throws IOException{
111
112             Properties prop=new Properties();
113
114             if(properFileName.endsWith(".xml")||properFileName.endsWith(".XML")){
115
116                 prop.loadFromXML(new FileInputStream(properFileName));
117                 for(String key:map.keySet()){
118                     prop.put(key, map.get(key));
119                 }
120                 OutputStream os=new FileOutputStream(properFileName);
121                 prop.storeToXML(os, "我已经被修了");
122                 os.close();
123             }else{
124                 prop.load(new FileReader(properFileName));
125                 for(String key:map.keySet()){
126                     prop.put(key, map.get(key));
127                 }
128                 FileWriter fw=new FileWriter(properFileName);
129                 prop.store(fw, "我已经被修改了");
130                 fw.close();
131             }
132         }
133 }