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

Question

RegController.java

Controller Springmvc的方法：
IMUsers.Main(nkname, password);

在RegController中调用IMUsers的Main执行就错误了

在IMUsers中创建一个Main方法，然后调用Main就没有错。

IMUsers.java

public static final Logger LOGGER = LoggerFactory.getLogger(IMUsers.class);
	public static final JsonNodeFactory factory = new JsonNodeFactory(false);

//35行    public static Credential credential = new ClientSecretCredential(Constants.APP_CLIENT_ID,
            Constants.APP_CLIENT_SECRET, Roles.USER_ROLE_APPADMIN);

    
    
    

    public static void Main(String username,String password){
    	ObjectNode datanode = JsonNodeFactory.instance.objectNode();
	     datanode.put("username",username);
	     datanode.put("password", password);
	     System.out.println(datanode);
	     ObjectNode createNewIMUserSingleNode = IMUsers.createNewIMUserSingle(datanode);
	     
	     if (null != createNewIMUserSingleNode) {
	    	 System.out.println("为空");
	     }
	     
    }
    
    
    /**
	 * 注册IM用户[单个]
	 * 
	 * 给指定Constants.APPKEY创建一个新的用户
	 * 
	 * @param dataNode
	 * @return
	 */
	public static ObjectNode createNewIMUserSingle(ObjectNode dataNode) {

		ObjectNode objectNode = factory.objectNode();

		// check Constants.APPKEY format
		if (!HTTPClientUtils.match("^(?!-)[0-9a-zA-Z\-]+#[0-9a-zA-Z]+", Constants.APPKEY)) {
			LOGGER.error("Bad format of Constants.APPKEY: " + Constants.APPKEY);
			System.out.println("错误");
			objectNode.put("message", "Bad format of Constants.APPKEY");

			return objectNode;
		}

		objectNode.removeAll();

		// check properties that must be provided
		if (null != dataNode && !dataNode.has("username")) {
			LOGGER.error("Property that named username must be provided .");

			objectNode.put("message", "Property that named username must be provided .");

			return objectNode;
		}
		if (null != dataNode && !dataNode.has("password")) {
			LOGGER.error("Property that named password must be provided .");

			objectNode.put("message", "Property that named password must be provided .");

			return objectNode;
		}

		try {

		    objectNode = HTTPClientUtils.sendHTTPRequest(EndPoints.USERS_URL, credential, dataNode,
					HTTPMethod.METHOD_POST);

		} catch (Exception e) {
			e.printStackTrace();
		}

		return objectNode;
	}

java.lang.ClassNotFoundException: org.apache.http.HttpEntity
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1720)
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1571)
at com.datanum.user.httpclient.api.IMUsers.<clinit>(IMUsers.java:35)
at com.datanum.user.web.RegController.RegQQ(RegController.java:172)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.springframework.web.method.support.InvocableHandlerMethod.invoke(InvocableHandlerMethod.java:219)
at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:132)
at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:104)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandleMethod(RequestMappingHandlerAdapter.java:745)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:686)
at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:80)
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:925)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:856)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:936)
at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:838)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:646)
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:812)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at com.alibaba.druid.support.http.WebStatFilter.doFilter(WebStatFilter.java:124)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:501)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:950)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1070)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:611)
at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2440)
at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2429)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:724)

Answer 1

自己写一个请求工具类也可以

Answer 2

题主您好，这几天开发也遇到了和您相同的问题，请问您是怎么解决的，还记得吗？

Answer 3

使用PHP代替Java rest

Answer 4

回复
什么意思？问题没有解决，只是更换了开发语言？

Answer 5

回复
PHP做REST，其他功能还是Java。或者换用Jersey。环信做的还是挺一般的。有的包放入lib中才行，还有部分方法中的私有要改。试试Jersey

Answer 6

回复
我的这个问题已经解决了。原因是我pom里 httpclient 依赖加了这个一个 <optional>true</optional>，运行时就不会加载 httpclient对应的jar包。

Answer 7

回复
mark 我之前的不是maven项目，也是错

Answer 8

我也遇到这个问题了。请问你是如何解决的？

Answer 9

1. jar包不全

2. jar包冲突

3. jar版本不对

Answer 10

Jar加了

Answer 11

回复
那就看看项目运行时这个包是否存在。或者是不是有多个，造成冲突了？

Answer 12

#E53333;background-color:#FFFFFF;">java.lang.ClassNotFoundException: org.apache.http.HttpEntity

#E53333;background-color:#FFFFFF;">把缺少的jar加进来，试试。