我使用netbeans-8,jdk 7,tomcat 8.05.我在netbeans中创建了一个webapp,并将
javax.json api添加到我的项目中,该代码没有显示错误,但是当我运行我的servlet时,会发生以下错误.
HTTP Status 500 - Provider org.glassfish.json.JsonProviderImpl not found
type Exception report
message Provider org.glassfish.json.JsonProviderImpl not found
description The server encountered an internal error that prevented it from fulfilling this request.
exception
javax.json.JsonException: Provider org.glassfish.json.JsonProviderImpl not found
javax.json.spi.JsonProvider.provider(JsonProvider.java:97)
javax.json.Json.createObjectBuilder(Json.java:266)
NewServlet.doGet(NewServlet.java:24)
javax.servlet.http.HttpServlet.service(HttpServlet.java:618)
javax.servlet.http.HttpServlet.service(HttpServlet.java:725)
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
org.netbeans.modules.web.monitor.server.MonitorFilter.doFilter(MonitorFilter.java:393)
root cause
java.lang.ClassNotFoundException: org.glassfish.json.JsonProviderImpl
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1284)
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1132)
java.lang.Class.forName0(Native Method)
java.lang.Class.forName(Class.java:190)
javax.json.spi.JsonProvider.provider(JsonProvider.java:94)
javax.json.Json.createObjectBuilder(Json.java:266)
NewServlet.doGet(NewServlet.java:24)
javax.servlet.http.HttpServlet.service(HttpServlet.java:618)
javax.servlet.http.HttpServlet.service(HttpServlet.java:725)
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
org.netbeans.modules.web.monitor.server.MonitorFilter.doFilter(MonitorFilter.java:393)
note The full stack trace of the root cause is available in the Apache Tomcat/8.0.3 logs.
Apache Tomcat/8.0.3
解决方法
javax.json api(在JSON Processing API jar中提供)只适用于编译应用程序.
如果要运行应用程序,则必须下载JSON Processing RI jar,如下所述：https://jsonp.java.net/download.html
JSON处理RI jar包含您缺少的org.glassfish.json.JsonProviderImpl类.
