Question

我正在使用TomCat 9构建一个动态Web项目，并设置java.lang.ClassNotFoundException：org.apache.http.HttpEntity。

我的项目是进行Oauth调用，它从UI获取客户端ID和秘密（index.html）---＆gt; servlet（outPutValue.java）----＆gt; Addition.java，它使用客户端凭据调用API，并且应该获取访问令牌，但现在如果我添加IO异常处理，它会抛出以下错误

SEVERE：用于servlet [controller.outPutValue]的Servlet.service（）上下文与路径[/ Calculator]抛出异常[Servlet执行抛出异常]与根本原因java.lang.ClassNotFoundException： org.apache.http.HttpEntity at org.apache.catalina.loader.WebappClassLoaderBase.loadClass（WebappClassLoaderBase.java:1269）在 org.apache.catalina.loader.WebappClassLoaderBase.loadClass（WebappClassLoaderBase.java:1104）在controller.outPutValue.doPost（outPutValue.java:48）

加法代码 -

public class addition {
private int first;
private int second;
public int getFirst() {
    return first;
}
public void setFirst(int first) {
    this.first = first;
}
public int getSecond() {
    return second;
}
public void setSecond(int second) {
    this.second = second;
}


public void add(String first,String second) throws ClientProtocolException, IOException {

System.out.println("This is after coming to addition");


HttpClient client = HttpClientBuilder.create().build();
HttpPost post = new HttpPost("https://api-XYZ.com/oauth2/token");

    post.setHeader("Content-Type", "application/x-www-form-urlencoded");
    post.setHeader("Accept","application/json");
    post.setHeader("Accept-Language", "en-US,en");

List <NameValuePair> body = new ArrayList <NameValuePair>();
body.add(new BasicNameValuePair("client_id",first));
body.add(new BasicNameValuePair("client_secret",second));
body.add(new BasicNameValuePair("grant_type","client_credentials"));

post.setEntity(new UrlEncodedFormEntity(body));
HttpResponse response=null;
response = client.execute(post);
System.out.println(response.getStatusLine().getStatusCode());

String auth_resp=null;
auth_resp = EntityUtils.toString(response.getEntity());
System.out.println(auth_resp);

}

Str --- PFA enter image description here

获取java.lang.ClassNotFoundException：org.apache.http.HttpEntity

0 个答案: