throw unchecked exception on error happened when iterate files

src/main/java/com/qiniu/common/UncheckedQiniuException.java

@@ -0,0 +1,75 @@
+package com.qiniu.common;
+
+import com.qiniu.http.Error;
+import com.qiniu.http.Response;
+
+
+/**
+ * 七牛SDK异常封装类，封装了http响应数据
+ */
+public final class UncheckedQiniuException extends RuntimeException {
+
+    public final Response response;
+    private String error;
+    private boolean isUnrecoverable = false;
+
+
+    public UncheckedQiniuException(Response response) {
+        super(response != null ? response.getInfo() : null);
+        this.response = response;
+        if (response != null) {
+            response.close();
+        }
+    }
+
+    public static UncheckedQiniuException unrecoverable(Exception e) {
+        UncheckedQiniuException exception = new UncheckedQiniuException(e);
+        exception.isUnrecoverable = true;
+        return exception;
+    }
+
+    public static UncheckedQiniuException unrecoverable(String msg) {
+        UncheckedQiniuException exception = new UncheckedQiniuException(null, msg);
+        exception.isUnrecoverable = true;
+        return exception;
+    }
+
+    public UncheckedQiniuException(Exception e) {
+        this(e, null);
+    }
+
+    public UncheckedQiniuException(Exception e, String msg) {
+        super(msg != null ? msg : (e != null ? e.getMessage() : null), e);
+        this.response = null;
+        this.error = msg;
+    }
+
+    public String url() {
+        return response != null ? response.url() : "";
+    }
+
+    public int code() {
+        return response != null ? response.statusCode : Response.NetworkError;
+    }
+
+    public boolean isUnrecoverable() {
+        return isUnrecoverable;
+    }
+
+    public String error() {
+        if (error != null) {
+            return error;
+        }
+        if (response == null || response.statusCode / 100 == 2 || !response.isJson()) {
+            return null;
+        }
+        Error e = null;
+        try {
+            e = response.jsonToObject(Error.class);
+        } catch (QiniuException e1) {
+            e1.printStackTrace();
+        }
+        error = e == null ? "" : e.error;
+        return error;
+    }
+}

src/main/java/com/qiniu/storage/BucketManager.java

@@ -6,6 +6,7 @@
 import com.google.gson.JsonObject;
 import com.qiniu.common.Constants;
 import com.qiniu.common.QiniuException;
+import com.qiniu.common.UncheckedQiniuException;
 import com.qiniu.http.Client;
 import com.qiniu.http.Response;
 import com.qiniu.storage.model.*;
@@ -1239,11 +1240,10 @@ public String execBucket() {
      */
     public class FileListIterator implements Iterator<FileInfo[]> {
         private String marker = null;
-        private String bucket;
-        private String delimiter;
-        private int limit;
-        private String prefix;
-        private QiniuException exception = null;
+        private final String bucket;
+        private final String delimiter;
+        private final int limit;
+        private final String prefix;
 
         public FileListIterator(String bucket, String prefix, int limit, String delimiter) {
             if (limit <= 0) {
@@ -1258,13 +1258,10 @@ public FileListIterator(String bucket, String prefix, int limit, String delimite
             this.delimiter = delimiter;
         }
 
-        public QiniuException error() {
-            return exception;
-        }
 
         @Override
         public boolean hasNext() {
-            return exception == null && !"".equals(marker);
+            return "".equals(marker);
         }
 
         @Override
@@ -1274,8 +1271,7 @@ public FileInfo[] next() {
                 this.marker = f.marker == null ? "" : f.marker;
                 return f.items;
             } catch (QiniuException e) {
-                this.exception = e;
-                return null;
+                throw new UncheckedQiniuException(e, e.getMessage());
             }
         }