從json響應中刪除unicode字符串和空格

Question

我正在調用一個Web服務，它給了我Json Response。 這是代碼

URL url = new URL(strUrl);
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
conn.setDoOutput(true);
...
//get response text
BufferedReader br = new BufferedReader(new InputStreamReader(conn.getInputStream(),"UTF-8"));           
StringBuffer response = new StringBuffer();
while ((respText = br.readLine()) != null) {                
    response.append(respText);
}
br.close(); 
retValue = response.toString();

問題是響應如下

"{\u000d\u000a  \"groups\": [\u000d\u000a    {\u000d\u000a      \"signingGroupId\": \"323793\",\u000d\u000a      \"groupName\": \"1440 Signing Group 1\",\u000d\u000a      \"groupType\": \"sharedSigningGroup\",\u000d\u000a      \"created\": \"3\/27\/2019 6:08:34 AM\",\u000d\u000a      \"createdBy\": \"ABC Software\",\u000d\u000a      \"modified\": \"4\/1\/2019 6:40:45 AM\",\u000d\u000a      \"modifiedBy\": \"Corner O'Brien\"\u000d\u000a    },\u000d\u000a    {\u000d\u000a      \"signingGroupId\": \"323794\",\u000d\u000a      \"groupName\": \"1440 Another Group\",\u000d\u000a      \"groupType\": \"sharedSigningGroup\",\u000d\u000a      \"created\": \"3\/27\/2019 6:14:52 AM\",\u000d\u000a      \"createdBy\": \"XYZ Software\",\u000d\u000a      \"modified\": \"3\/27\/2019 6:16:37 AM\",\u000d\u000a      \"modifiedBy\": \"XYZ Software\"\u000d\u000a    }\u000d\u000a  ]\u000d\u000a}"

我想從上面的回復中做出這樣的反應

"{"groups":[{"signingGroupId": "323793","groupName": "1440 Signing Group 1","groupType": "sharedSigningGroup","created": "3/27/2019 6:08:34 AM","createdBy": "ABC Software","modified": "4/1/2019 6:40:45 AM","modifiedBy": "John O'Brien"},{"signingGroupId": "323794","groupName": "1440 Another Group","groupType": "sharedSigningGroup","created": "3/27/2019 6:14:52 AM","createdBy": "ABC Software","modified": "3/27/2019 6:16:37 AM","modifiedBy": "ABC Software"}]}"

那就是刪除之后的所有\ \ 和spaces 。 但是不要從任何Json Property中刪除空間。

我試過這個

retValue = retValue.replace("\\u000d\\u000a", "");
retValue = retValue.replace("\\", "");

這給了我

"{  "groups": [    {      "signingGroupId": "323793",      "groupName": "1440 Signing Group 1",      "groupType": "sharedSigningGroup",      "created": "3/27/2019 6:08:34 AM",      "createdBy": "ABC Software",      "modified": "4/1/2019 6:40:45 AM",      "modifiedBy": "John O'Brien"    },    {      "signingGroupId": "323794",      "groupName": "1440 Another Group",      "groupType": "sharedSigningGroup",      "created": "3/27/2019 6:14:52 AM",      "createdBy": "XYZ Software",      "modified": "3/27/2019 6:16:37 AM",      "modifiedBy": "XYZ Software"    }  ]}"

但仍有空間。 現在如果我使用

String replcaedNewLineAndSpaces = retValue.replaceAll("[ \t]+", "");

問題在於這條線是否也會從Json Properties中刪除空格。

"{"groups":[{"signingGroupId":"323793","groupName":"1440SigningGroup1","groupType":"sharedSigningGroup","created":"3/27/20196:08:34AM","createdBy":"ABCSoftware","modified":"4/1/20196:40:45AM","modifiedBy":"JohnO'Brien"},{"signingGroupId":"323794","groupName":"1440AnotherGroup","groupType":"sharedSigningGroup","created":"3/27/20196:14:52AM","createdBy":"XYZSoftware","modified":"3/27/20196:16:37AM","modifiedBy":"XYZSoftware"}]}"

請參閱groupName，即"groupName": "1440 Signing Group 1" 。 現在變成1440SigningGroup1 。 其他屬性也是如此。

無論如何它保持Json字符串\ \ 但刪除\ \ spaces 。 所以最后的回應變成了

"{"groups":[{"signingGroupId": "323793","groupName": "1440 Signing Group 1","groupType": "sharedSigningGroup","created": "3/27/2019 6:08:34 AM","createdBy": "ABC Software","modified": "4/1/2019 6:40:45 AM","modifiedBy": "John O'Brien"},{"signingGroupId": "323794","groupName": "1440 Another Group","groupType": "sharedSigningGroup","created": "3/27/2019 6:14:52 AM","createdBy": "ABC Software","modified": "3/27/2019 6:16:37 AM","modifiedBy": "ABC Software"}]}"

謝謝

Answer 1

正如評論中所提到的，創建POJO類並解析JSON將是最佳和安全的。 （我認為最常見的庫是GSon庫 ）

但是，如果您堅持刪除空格，請使用簡單的正則表達式：

retValue.replaceAll("\\\\u000d\\\\u000a\\s*", "")

這將替換以\\ u000d \\ u000a開頭的所有字符串，后跟0-無限制空格。