json对象转报文_项目记事【SpringMVC-2】：将后台的对象，转成JSON报文

Spring版本：3.2.7

Jackson版本：

3 com.fasterxml.jackson.core

4 jackson-databind

5 2.1.3

8 com.fasterxml.jackson.core

9 jackson-core

10 2.1.3

13 com.fasterxml.jackson.core

14 jackson-annotations

15 2.1.2

POM文件配置

背景：

需要将后端的一个对象，通过SPringMVC框架，传递到前端时，自动转换成对应的JSON格式报文。

堆栈信息：

org.springframework.http.converter.HttpMessageNotWritableException: Could not write JSON: No serializer found for class

org.hibernate.proxy.pojo.javassist.JavassistLazyInitializer and no properties discovered to create BeanSerializer (to avoid exception, disable

SerializationConfig.SerializationFeature.FAIL_ON_EMPTY_BEANS) ) (through reference chain: com.siebre.pms.common.model.ResponseVO["data"]-

>com.siebre.pms.template.model.LiabilityTemplateDO["propertyAssignments"]->org.hibernate.collection.PersistentBag[0]-

>com.siebre.pms.template.model.PropertyAssignmentTemplateDO["propertyTemplate"]->com.siebre.pms.template.model.PropertyTemplateDO_$

$_javassist_187["handler"]); nested exception is com.fasterxml.jackson.databind.JsonMappingException: No serializer found for class

org.hibernate.proxy.pojo.javassist.JavassistLazyInitializer and no properties discovered to create BeanSerializer (to avoid exception, disable

SerializationConfig.SerializationFeature.FAIL_ON_EMPTY_BEANS) ) (through reference chain: com.siebre.pms.common.model.ResponseVO["data"]-

>com.siebre.pms.template.model.LiabilityTemplateDO["propertyAssignments"]->org.hibernate.collection.PersistentBag[0]-

>com.siebre.pms.template.model.PropertyAssignmentTemplateDO["propertyTemplate"]->com.siebre.pms.template.model.PropertyTemplateDO_$

$_javassist_187["handler"])

at org.springframework.http.converter.json.MappingJackson2HttpMessageConverter.writeInternal

(MappingJackson2HttpMessageConverter.java:207)

at org.springframework.http.converter.AbstractHttpMessageConverter.write(AbstractHttpMessageConverter.java:179)

at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter

$ServletHandlerMethodInvoker.writeWithMessageConverters(AnnotationMethodHandlerAdapter.java:1037)

at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter$ServletHandlerMethodInvoker.handleResponseBody

(AnnotationMethodHandlerAdapter.java:995)

at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter$ServletHandlerMethodInvoker.getModelAndView

(AnnotationMethodHandlerAdapter.java:944)

at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.invokeHandlerMethod

(AnnotationMethodHandlerAdapter.java:441)

at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.handle(AnnotationMethodHandlerAdapter.java:428)

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:953)

at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:844)

at javax.servlet.http.HttpServlet.service(HttpServlet.java:627)

at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:829)

at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:269)

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)

at com.siebre.web.servlet.filter.CorsFilter.doFilter(CorsFilter.java:53)

at com.siebre.web.servlet.filter.CorsFilter.doFilter(CorsFilter.java:34)

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:215)

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)

at com.siebre.webapp.filter.WindowContextFilter.doFilterInternal(WindowContextFilter.java:274)

at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:215)

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)

at org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:378)

at org.springframework.security.intercept.web.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:109)

at org.springframework.security.intercept.web.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:83)