Question

我有代码

HttpHeaders headers = new HttpHeaders();
headers.set("Current-Version", "v1");

LinkedMultiValueMap<String, String> map = new LinkedMultiValueMap<>();
map.add("email", "test@test.test");
HttpEntity<MultiValueMap<String, String>> request = 
new HttpEntity<MultiValueMap<String, String>>(map, headers);

HttpEntity<Login> response = getRestTemplate().exchange(
    url,
    HttpMethod.POST,
    request ,
    Login.class
);

这很好，但在服务器端，我以格式JSON获得请求的BODY，尽管web格式是param1=val1&param2=val2。我必须以param1=val1&param2=val2格式向服务器发送发布请求。

我该怎么做？

Answer 1

请使用以下方法。

from pandas.io.json import json_normalize    
df = json_normalize(d, ['applications', ['answers']])
print (df)
    answer           question
0  Indeed   How did you hear?

<强>用法

public static String getPostDataString(HashMap<Object, Object> params) throws UnsupportedEncodingException {
        StringBuilder result = new StringBuilder();
        boolean first = true;
        for(Map.Entry<Object, Object> entry : params.entrySet()){
            if (first)
                first = false;
            else
                result.append("&");

            result.append(URLEncoder.encode(entry.getKey().toString()));
            result.append("=");
            result.append(URLEncoder.encode(entry.getValue().toString()));
        }

        return result.toString();
    }

将所有数据放入try{ String requestJSON = getPostDataString(inputData); }catch (UnsupportedEncodingException e){ e.printStackTrace(); }并在此方法中传递HashMap，您将获得 param1 = val1＆amp; param2 = val2 格式的请求字符串。

示例

HashMap

现在在方法中传递HashMap<Object, Object> map = new HashMap<>(); map.put("email", "test@test.test"); map.put("password", "testtest"); map.put("type", "1");以上。

String requestString =“”;

HashMap

您将获得以下格式的请求字符串。

<强> try{ requestString = getPostDataString(map); }catch (UnsupportedEncodingException e){ e.printStackTrace(); }

Answer 2

在exchnage方法中，还有3个参数可以传递，

requestEntity - the entity (headers and/or body) to write to the request, may be null
responseType - the type of the return value
uriVariables - the variables to expand in the template

Java（Android），方法POST，Web格式而不是JSON

2 个答案: