上传图片

src/main/java/com/archser/aserver/controller/SettingController.java

@@ -2,8 +2,10 @@ package com.archser.aserver.controller;
 
 import java.io.File;
 import java.io.FileInputStream;
+import java.io.FileOutputStream;
 import java.io.IOException;
 import java.io.InputStream;
+import java.io.OutputStream;
 import java.util.List;
 import java.util.Objects;
 import com.archser.aserver.interceptor.JwtInterceptor;
@@ -19,6 +21,8 @@ import com.jfinal.kit.PathKit;
 import com.jfinal.kit.Ret;
 import com.jfinal.plugin.activerecord.Db;
 import com.jfinal.plugin.activerecord.tx.Tx;
+import com.jfinal.upload.UploadFile;
+import sun.misc.BASE64Decoder;
 import sun.misc.BASE64Encoder;
 
 /**
@@ -238,4 +242,64 @@ public class SettingController extends Controller {
     }
     /** xiaoying 20200715 YZJ-4212 功能操作中没有应用管理的日志 end */
   }
+  
+  /**
+   * LiuKexin 202000930 更换系统图标和名称
+   */
+  public void changeSetting() {
+    UploadFile file = getFile();
+    //没有更换图标
+    if(file == null) {
+      renderJson(Ret.ok("msg","修改成功"));
+      return;
+    }
+    //新图标的路径
+    String uploadPath = file.getUploadPath() + File.separator + file.getFileName();
+    //转化成base64
+    String logoUrl = ImageToBase64(uploadPath);
+    
+    //图标路径
+    String filePath =
+        PathKit.getRootClassPath()+ File.separator + "logo.png";
+    // 对字节数组字符串进行Base64解码并生成图片
+    boolean success = Base64ToImange(logoUrl,filePath);
+    new File(uploadPath).delete();
+    if(success) {
+      renderJson(Ret.ok("msg","修改成功"));
+    }else {
+      renderJson(Ret.fail("msg","图片上传失败"));
+    }
+    
+  }
+
+  /**
+   * LiuKexin 20200930 对字节数组字符串进行Base64解码并生成图片
+   * @param logoUrl
+   * @param filePath
+   * @return
+   */
+  private boolean Base64ToImange(String logoUrl, String filePath) {
+    if (logoUrl == null) // 图像数据为空
+      return false;
+    BASE64Decoder decoder = new BASE64Decoder();
+    try {
+        // Base64解码
+        byte[] bytes = decoder.decodeBuffer(logoUrl);
+        for (int i = 0; i < bytes.length; ++i) {
+            if (bytes[i] < 0) {// 调整异常数据
+                bytes[i] += 256;
+            }
+        }
+        // 生成图片
+        OutputStream out = new FileOutputStream(filePath);
+        out.write(bytes);
+        out.flush();
+        out.close();
+        return true;
+    } catch (Exception e) {
+        return false;
+    }
+    
+  }
+  
 }