通过Properties读写文件

￡神魔★判官ぃ 2022-06-14 02:26 218阅读 0赞

package other;
    
    import java.io.FileInputStream;
    import java.io.FileNotFoundException;
    import java.io.FileOutputStream;
    import java.io.IOException;
    import java.util.Map;
    import java.util.Properties;
    
    public class Test {
    	private static Properties properties = new Properties();
    
    	//读取
    	public static Properties read(){
    		
    		FileInputStream in =null;
    		try {
    			in = new FileInputStream("test.properties");
    			properties.load(in);
    		} catch (IOException e) {
    			e.printStackTrace();
    		}finally{
    			try {
    				if(in!=null){
    					in.close();
    				}
    				} catch (IOException e) {
    					// TODO Auto-generated catch block
    					e.printStackTrace();
    				}
    		}
    		return properties;
    	}
    	
    	//添加或者修改
    	public static void insertOrmodify(String ...strings){
    		for(int i=0;i<strings.length;i=i+2){
    			properties.setProperty(strings[i],strings[i+1]);
    		}
    		FileOutputStream out=null;
    		try {
    			 out = new FileOutputStream("test.properties");
    			 properties.store(out, "insertOrmodify");
    		} catch (Exception e) {
    			// TODO Auto-generated catch block
    			e.printStackTrace();
    		}finally{
    			try {
    				if(out!=null){
    					out.close();
    				}
    			} catch (IOException e) {
    				// TODO Auto-generated catch block
    				e.printStackTrace();
    			}
    		}
    	}
    	
    	//删除
    	public static void remove(String ...strings){
    		for(int i=0;i<strings.length;i++){
    			properties.remove(strings[i]);
    		}
    		FileOutputStream out=null;
    		try {
    			 out = new FileOutputStream("test.properties");
    			 properties.store(out, "remove");
    		} catch (Exception e) {
    			// TODO Auto-generated catch block
    			e.printStackTrace();
    		}finally{
    			try {
    				if(out!=null){
    					out.close();
    				}
    			} catch (IOException e) {
    				// TODO Auto-generated catch block
    				e.printStackTrace();
    			}
    		}
    	}
    	
    	public static void main(String[] args) throws Exception {
    		Properties prop =read();
    		for(Map.Entry<Object, Object> entry:prop.entrySet()){
    			System.out.println(entry.getKey()+","+entry.getValue());
    		}
    		
    		insertOrmodify("name","hh","age","28","sex","male");
    		
    		remove("sex","name");
    		
    	}
    	
    }