HTTP状态500 - 未找到提供程序org.glassfish.json.JsonProviderImpl

Question

I am using netbeans-8, jdk 7,tomcat 8.05. I created a webapp in netbeans and added javax.json api to my project, the code shows no errors, but when i run my servlet the below error occurs.

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

Answer 1

The javax.json api (provided in the JSON Processing API jar) is good only for compiling the application.

If you want to run the application, you have to download the JSON Processing RI jar , as explained here: https://jsonp.java.net/download.html

The JSON Processing RI jar contains the org.glassfish.json.JsonProviderImpl class you are missing.

Answer 2

From this answer you could replace javax.json dependency by its org.glassfish implementation.

Maven repo , gives:

<dependency>
  <groupId>org.glassfish</groupId>
  <artifactId>javax.json</artifactId>
  <version>1.0.4</version>
</dependency>

Answer 3

I managed to make it work in my webapp in NetBeans by manually installing the JSON Processing RI jar.

The complete procedure is:

• Download the jar: JSON Processing RI jar
• Right-click on Project --> Dependencies and add new dependency providing dummy Group ID, Artifact ID and Version number.
• Right-click on the newly created dependency and select "Manually install artifact", provide the downloaded jar
• Rebuild project, now it should work