java - string.format 在 http post 请求和响应中抛出异常

Question

我想要一种放置格式说明符(如 %s)而不是放置硬代码值的方法，您可以在下面找到我的代码；

String userName = "Nicole";
    String password = "Nicole";

    HttpClient client = new DefaultHttpClient();

    HttpPost post = new HttpPost("url");

    String input=String.format("<soap:Envelope 

    xmlns:soap=\"http://www.w3.org/2003/05/soap-envelope\" xmlns:inn=\"http:Innovation/\">

    <soap:Header/><soap:Body><inn:getCategoriesbyVendorID><!--Optional:-->

    <userName>%s</userName><!--Optional:--><password>%s</password></inn:getCategoriesbyVendorID>

    </soap:Body></soap:Envelope>",userName,password);

        //StringEntity input = new StringEntity("<soap:Envelope 

    xmlns:soap=\"http://www.w3.org/2003/05/soap-envelope\" xmlns:inn=\"http:Innovation/\">

    <soap:Header/><soap:Body><inn:getCategoriesbyVendorID><!--Optional:-->

    <userName>Nicole</userName><!--Optional:--><password>Nicole</password>

    </inn:getCategoriesbyVendorID></soap:Body></soap:Envelope>");  

        post.setEntity(input);

        HttpResponse response = client.execute(post);

        BufferedReader rd = new BufferedReader(new 

    InputStreamReader(response.getEntity().getContent()));

        String line = "";

        while ((line = rd.readLine()) != null) {

        System.out.println(line);

使用上面的代码，实体抛出一个错误。谁能帮我解决这个问题？

Answer 1

您的字符串格式化语法没有任何问题。

It is showing an error in eclipse i e.,change type of input to HTTP entity(post. set Entity(input);).

错误是因为HttpPost.setEntity需要一个类型为 HttpEntity 的参数当您为其指定 String 的类型时。

尝试设置一个 org.apache.http.entity.StringEntity相反:

HttpEntity entity = new StringEntity(input); //Your formatted String 
post.setEntity(entity);