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https://issues.apache.org/jira/browse/WW-4846?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16145502#comment-16145502
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Yasser Zamani edited comment on WW-4846 at 8/29/17 3:42 PM:
------------------------------------------------------------
You're right. I found same issue at [Struts JSON Plug-In doesn't work with
Dependency Injection
(Spring)|https://stackoverflow.com/questions/40402922/struts-json-plug-in-doesnt-work-with-dependency-injection-spring].
Actually Struts-JSON-Plugin traverses all getters of supplied object to create
response. Your supplied object is a request-scope Spring bean! Such object has
other Spring-Supplied getters at runtime which you cannot see! Some how it's
not a good practice to create json from such complex object!
Struts-JSON-Plugin can not and does not guarantee that no exception occurs when
it calls your supplied object's getters. So just use a simpler object to create
json from. I mean an object which exactly has your required data, not less, not
more.
was (Author: yasser.zamani):
You're right. I found same issue at [Struts JSON Plug-In doesn't work with
Dependency Injection (Spring)
|https://stackoverflow.com/questions/40402922/struts-json-plug-in-doesnt-work-with-dependency-injection-spring].
Actually Struts-JSON-Plugin traverses all getters of supplied object to create
response. Your supplied object is a request-scope Spring bean! Such object has
other Spring-Supplied getters at runtime which you cannot see! Some how it's
not a good practice to create json from such complex object!
Struts-JSON-Plugin can not and does not guarantee that no exception occurs when
it calls your supplied object's getters. So just use a simpler object to create
json from. I mean an object which exactly has your required data, not less, not
more.
> Not able to convert Spring object to the JSON response
> ------------------------------------------------------
>
> Key: WW-4846
> URL: https://issues.apache.org/jira/browse/WW-4846
> Project: Struts 2
> Issue Type: Bug
> Components: Core Results, Plugin - JSON
> Affects Versions: 2.5.13
> Reporter: Vijay Srivastava
> Priority: Blocker
>
> Hi,
> I am using latest version of struts struts-2.5.12 and and spring 4.1 as
> advised. I am having an issue in JSON response. There is an action class
> which is returning Spring request scoped object as JSON response however I am
> getting error as below
> ERROR ExceptionMappingInterceptor org.apache.struts2.json.JSONException:
> org.apache.struts2.json.JSONException: org.apache.struts2.json.JSONException:
> org.apache.struts2.json.JSONException: org.apache.struts2.json.JSONException:
> java.lang.reflect.InvocationTargetException
> org.apache.struts2.json.JSONException:
> org.apache.struts2.json.JSONException: org.apache.struts2.json.JSONException:
> org.apache.struts2.json.JSONException: org.apache.struts2.json.JSONException:
> org.apache.struts2.json.JSONException:
> java.lang.reflect.InvocationTargetException
> at org.apache.struts2.json.JSONWriter.bean(JSONWriter.java:269)
> at org.apache.struts2.json.JSONWriter.processCustom(JSONWriter.java:197)
> at org.apache.struts2.json.JSONWriter.process(JSONWriter.java:182)
> at org.apache.struts2.json.JSONWriter.value(JSONWriter.java:143)
> at org.
> Any idea what's wrong here ? I am using Java 1.8. I think below code in
> JSONWriter is not working as expected
> protected Method findBaseAccessor(Class clazz, Method accessor) {
> Method baseAccessor = null;
> if (clazz.getName().contains("$$EnhancerByCGLIB$$")) {
> try {
> baseAccessor =
> Thread.currentThread().getContextClassLoader().loadClass(
> clazz.getName().substring(0,
> clazz.getName().indexOf("$$"))).getMethod(
> accessor.getName(), accessor.getParameterTypes());
> } catch (Exception ex) {
> LOG.debug(ex.getMessage(), ex);
> }
> } else if (clazz.getName().contains("$$_javassist")) {
> try {
> baseAccessor = Class.forName(
> clazz.getName().substring(0,
> clazz.getName().indexOf("_$$")))
> .getMethod(accessor.getName(),
> accessor.getParameterTypes());
> } catch (Exception ex) {
> LOG.debug(ex.getMessage(), ex);
> }
>
> //in hibernate4.3.7,because javassist3.18.1's class name generate
> rule is '_$$_jvst'+...
> } else if(clazz.getName().contains("$$_jvst")){
> try {
> baseAccessor = Class.forName(
> clazz.getName().substring(0,
> clazz.getName().indexOf("_$$")))
> .getMethod(accessor.getName(),
> accessor.getParameterTypes());
> } catch (Exception ex) {
> LOG.debug(ex.getMessage(), ex);
> }
> }
> else {
> return accessor;
> }
> return baseAccessor;
> }
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