实现基本功能

src/com/dayrain/utils/FileUtils.java

@@ -1,21 +1,27 @@
 package com.dayrain.utils;
 
-import com.dayrain.entity.Configuration;
+import com.dayrain.component.Configuration;
 import com.fasterxml.jackson.databind.ObjectMapper;
 
 import java.io.BufferedReader;
+import java.io.File;
 import java.io.FileReader;
 import java.io.FileWriter;
 import java.io.IOException;
+import java.io.InputStream;
 
 public class FileUtils{
 
-    private static String configPath = Thread.currentThread().getContextClassLoader().getResource("resources/config.json").getFile();
+    private static String configPath = getResourcePath("config.json");
 
     public static void saveConfig(Configuration configuration){
+        saveConfig(configuration, new File(configPath));
+    }
+
+    public static void saveConfig(Configuration configuration, File file){
         FileWriter fileWriter = null;
         try {
-            fileWriter = new FileWriter(configPath);
+            fileWriter = new FileWriter(file);
             String config = new ObjectMapper().writerWithDefaultPrettyPrinter().writeValueAsString(configuration);
             fileWriter.write(config);
             fileWriter.flush();
@@ -30,19 +36,22 @@ public class FileUtils{
                 e.printStackTrace();
             }
         }
-
     }
 
     public static Configuration load() {
+        return load(new File(configPath));
+    }
+
+    public static Configuration load(File file) {
         BufferedReader bufferedReader = null;
         try {
             StringBuilder configStr = new StringBuilder();
-            bufferedReader = new BufferedReader(new FileReader(configPath));
+            bufferedReader = new BufferedReader(new FileReader(file));
             String buf = null;
             while ((buf = bufferedReader.readLine()) != null) {
                 configStr.append(buf);
             }
-            return new ObjectMapper().readValue(configStr.toString(), Configuration.class);
+            return "".equals(configStr.toString()) ? new Configuration(1200, 800, 8, 8) : new ObjectMapper().readValue(configStr.toString(), Configuration.class);
         } catch (IOException e) {
             e.printStackTrace();
         }finally {
@@ -56,4 +65,31 @@ public class FileUtils{
         }
         return null;
     }
+
+    public static String getFromInputStream(InputStream inputStream) {
+        try {
+            byte[]buf = new byte[4096];
+            int len = 0;
+            StringBuilder stringBuilder = new StringBuilder();
+            while ((len = inputStream.read(buf)) != -1) {
+                stringBuilder.append(new String(buf, 0, len));
+            }
+            return stringBuilder.toString();
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+
+        return null;
+    }
+
+    public static String getResourcePath(String fileName) {
+        String file = Thread.currentThread().getContextClassLoader().getResource("resources/" + fileName).getFile();
+        return new File(file).toString();
+    }
+
+    public static String getResourcePathWithProtocol(String fileName) {
+        String file = Thread.currentThread().getContextClassLoader().getResource("resources/" + fileName).getFile();
+        return "file:" + File.separator + new File(file);
+    }
+
 }