我正在尝试使用简单的Jersey + JSON示例,但我得到以下错误
message body writer for Java class com.test.jsonexample and MIME media type application/json was not found
我把以下jar文件用于获得适当的结果
asm-3.1.jar
jackson-core-asl-1.9.9.jar
jackson-jaxrs-1.9.9.jar
jackson-mapper-asl-1.9.9.jar
jackson-xc-1.9.9.jar
jersey-client-1.9.jar
jersey-core-1.9.1.jar
jersey-json-1.9.jar
jersey-server-1.9.1.jar
jettison-1.3.2.jar
jsr311-api-1.1.1.jar
为什么我会收到此类错误？错误日志在这里:
SEVERE: Mapped exception to response: 500 (Internal Server Error)
javax.ws.rs.WebApplicationException: com.sun.jersey.api.MessageException: A message body writer for Java class com.test.Jsonexample, and Java type class com.test.Jsonexample, and MIME media type application/json was not found
at com.sun.jersey.spi.container.ContainerResponse.write(ContainerResponse.java:285)
at com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApplicationImpl.java:1437)
at com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:1349)
at com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:1339)
at com.sun.jersey.spi.container.servlet.WebComponent.service(WebComponent.java:416)
at com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:537)
at com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:708)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
at …我在我的应用程序中使用MediaStore.Images.Media.EXTERNAL_CONTENT_URI(外部DB :: data/data/com.android.provider.media/external.db))使用我自己的_display_name保存图像,例如:image_101.jpg但之后有时候显示名称变成长号.比如1327392947034.jpg.下次当我使用_display_name(image_101.jpg)获取图像时,它在外部数据库中找不到任何内容.谁能告诉我为什么会这样？
谢谢
我是Android开发的新手,当我
在paypal登录成功后点击付费按钮时,我的paypal应用程序出现以下问题.
它显示错误,如ANDROID_589023