如何将url中的json数据作为java中的请求参数发送
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How to send json data in url as request parameters in java
提问by Sanjaya Liyanage
I want to send json data in url as below .
我想在 url 中发送 json 数据，如下所示。
editTest.jsp?details=374889331-{"aNumber":2}
How can I do this?
我怎样才能做到这一点？
采纳答案by eee
URL encode your details parameter:
URL 编码您的详细信息参数：
String otherParameter = "374889331-";
String jsonString = "{\"aNumber\":2}";
String url = "editTest.jsp?details=" + URLEncoder.encode(otherParameter + jsonString, "UTF-8");
回答by Nishad K Ahamed
you need to convert the JSON objectto string
您需要将转换JSON object为字符串
JSONObject obj = new JSONObject();
obj.put("name","foo");
StringWriter out = new StringWriter();
obj.writeJSONString(out);
String jsonText = out.toString();//JSON object is converted to string
Now, you can pass this jsonTextas parameter.
现在，您可以将其jsonText作为参数传递。
回答by Anptk
We can use the help of Gson
我们可以借助 Gson
String result =new Gson().toJson("your data");
NB: jar file needed for Gson
注意：Gson 需要 jar 文件
回答by limo_756
We can convert the Object to JSON Object using GSON, then parse the JSON object and convert it to query param string. The Object should only contain primitive objects like int, float, string, enum, etc. Otherwise, you need to add extra logic to handle those cases.
我们可以使用 GSON 将 Object 转换为 JSON Object，然后解析 JSON 对象并将其转换为查询参数字符串。Object 应该只包含原始对象，如 int、float、string、enum 等。否则，您需要添加额外的逻辑来处理这些情况。
public String getQueryParamsFromObject(String baseUrl, Object obj) {
JsonElement json = new Gson().toJsonTree(obj);
// Assumption is that all the parameters will be json primitives and there will
// be no complex objects.
return baseUrl + json.getAsJsonObject().entrySet().stream()
.map(entry -> entry.getKey() + "=" + entry.getValue().getAsString())
.reduce((e1, e2) -> e1 + "&" + e2)
.map(res -> "?" + res).orElse("");
}
