How to create new spring bean if bean is autowired?
Question
In this code i already have a bean autowired in the xml, but i need to create a new bean again and it gives me error
SEVERE:
ERROR 2014-02-04 17:52:29,934 [http-8080-5] (FrameworkServlet.java:314) (initServletBean) - Context initialization failed
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'fileController': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: com.hmkcode.spring.mvc.model.FileMeta com.hmkcode.spring.mvc.controllers.FileController.fileMeta; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'fileMeta': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: com.hmkcode.spring.mvc.model.FileMeta com.hmkcode.spring.mvc.model.FileMeta.fileMeta; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No matching bean of type [com.hmkcode.spring.mvc.model.FileMeta] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:286)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1064)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:517)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:456)
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:291)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:288)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:190)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:574)
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:895)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:425)
at org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:442)
at org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:458)
at org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.java:339)
at org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:306)
at org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.java:127)
at javax.servlet.GenericServlet.init(GenericServlet.java:212)
at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1213)
at org.apache.catalina.core.StandardWrapper.allocate(StandardWrapper.java:827)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:129)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:861)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:606)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
at java.lang.Thread.run(Thread.java:701)
Code:
This is my spring xml file and i need to get the fileSystemPath property form here for evey instance of the bean i create in the controller. . . . ...............................................................................................................................
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.0.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd">
<context:component-scan base-package="com.hmkcode.spring.mvc" />
<mvc:annotation-driven />
<bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver"/>
<context:annotation-config />
<bean id="fileMeta" scope="prototype" class="com.hmkcode.spring.mvc.model.FileMeta">
<property name="fileSystemPath" value="/home/mohan/extra/data/cmsPhoto/"/>
</bean>
</beans>
Hi this is my bean file and all i am trying to do is get value from xml and create multiple instances of the bean................................................
@JsonIgnoreProperties({"bytes"})
@Component
public class FileMeta
{
private String fileName;
private String fileSize;
private String fileType;
private String fileSystemPath;
private byte[] bytes;
public String getFileName() {
return fileName;
}
public void setFileName(String fileName) {
this.fileName = fileName;
}
public String getFileSize() {
return fileSize;
}
public void setFileSize(String fileSize) {
this.fileSize = fileSize;
}
public String getFileType() {
return fileType;
}
public void setFileType(String fileType) {
this.fileType = fileType;
}
public String getFileSystemPath()
{
return fileSystemPath;
}
public void setFileSystemPath(String fileSystemPath)
{
this.fileSystemPath = fileSystemPath;
}
public byte[] getBytes() {
return bytes;
}
public void setBytes(byte[] bytes) {
this.bytes = bytes;
}
@Override
public String toString()
{
return "FileMeta [fileName=" + fileName + ", fileSize=" + fileSize
+ ", fileType=" + fileType + ", fileSystemPath="
+ fileSystemPath + "]";
}
@Override
public boolean equals(Object obj)
{
if (getClass() != obj.getClass())
{
return false;
}
FileMeta other = (FileMeta) obj;
if((fileName.equals(other.fileName)) && (fileSize.equals(other.fileSize)) && (fileType.equals(other.fileType)))
{
return true;
}
else
return false;
}
}
package com.hmkcode.spring.mvc.controllers;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.Iterator;
import java.util.LinkedList;
import java.util.List;
import javax.servlet.http.HttpServletResponse;
import org.apache.commons.collections.list.SetUniqueList;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.util.FileCopyUtils;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.multipart.MultipartFile;
import org.springframework.web.multipart.MultipartHttpServletRequest;
import com.hmkcode.spring.mvc.model.FileMeta;
@Controller
@RequestMapping("/controller")
public class FileController {
@Autowired
FileMeta fileMeta;
// String fileSystemPath = fileMeta.getFileSystemPath();
/***************************************************
* URL: /rest/controller/upload
* upload(): receives files
* @param request : MultipartHttpServletRequest auto passed
* @param response : HttpServletResponse auto passed
* @return LinkedList<FileMeta> as json format
****************************************************/
LinkedList<FileMeta> files = new LinkedList<FileMeta>();
int i = 0;
@RequestMapping(value="/upload", method = RequestMethod.POST)
public synchronized @ResponseBody LinkedList<FileMeta> upload(MultipartHttpServletRequest request, HttpServletResponse response)
{
System.out.println("#################### Hit Upload");
Iterator<String> itr = request.getFileNames();
while(itr.hasNext())
{
FileMeta fileMeta = new FileMeta();
// fileMeta.setFileSystemPath(fileSystemPath);
MultipartFile mpf = null;
mpf = request.getFile(itr.next());
if(files.size() >= 10)
files.pop();
fileMeta.setFileName(mpf.getOriginalFilename());
fileMeta.setFileSize(mpf.getSize() / 1024+" Kb");
fileMeta.setFileType(mpf.getContentType());
System.out.println("%%% List(A): "+files);
if(files.contains(fileMeta))
{
System.out.println(fileMeta+" -- Already Present");
continue;
}
else
{
try {
fileMeta.setBytes(mpf.getBytes());
FileCopyUtils.copy(mpf.getBytes(), new FileOutputStream(fileMeta.getFileSystemPath()+""+fileMeta.getFileName()));
// FileCopyUtils.copy(mpf.getBytes(), new FileOutputStream("/home/mohan/extra/data/cmsPhoto/"+mpf.getOriginalFilename()));
System.out.println("===========> "+fileMeta.getFileName()+" : (OG): "+mpf.getOriginalFilename() +" Uploaded! "+mpf.getSize()/1024+" Kb");
}catch (IOException e){}
files.add(fileMeta);
}
// FileMeta file = new FileMeta();
// file.setFileName(mpf.getOriginalFilename());
// file.setFileSize(""+mpf.getSize()/1024+" Kb");
// file.setFileType(mpf.getContentType());
//2.4 add to files
// itr.remove();
// files.remove(fileMeta);
System.out.println("%%% List(B): "+files);
}//end while
// result will be like this
// [{"fileName":"app_engine-85x77.png","fileSize":"8 Kb","fileType":"image/png"},...]
return files;
}
}
1 answers
solution1
2 2014-02-06 06:00:58
I got it resolved by implementing ApplicationContextAware and creating new spring bean like this:
public FileMeta getFileMeta()
{
return applicationContext.getBean("fileMeta", FileMeta.class);
}
and spring xml looks like this:
<context:component-scan base-package="com.hmkcode.spring.mvc" />
<mvc:annotation-driven />
<bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver"/>
<context:annotation-config />
<bean id="fileMeta" scope="prototype" class="com.hmkcode.spring.mvc.model.FileMeta">
<property name="fileSystemPath" value="/home/mohan/extra/data/cmsPhoto/"/>
</bean>
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