ssh2+jbpm4.4项目 审批流转：审批流程管理的思路

package cn.itcast.oa.view.action;

import java.io.File;
import java.io.FileInputStream;
import java.io.InputStream;
import java.util.List;
import java.util.zip.ZipInputStream;

import org.jbpm.api.ProcessDefinition;
import org.springframework.context.annotation.Scope;
import org.springframework.stereotype.Controller;

import cn.itcast.oa.service.ProcessDefinitionService;

import com.opensymphony.xwork2.ActionContext;

@Controller
@Scope("prototype")
public class ProcessDefinitionAction extends BaseAction{

private String key;
private File upload; //上传
private String id;
private InputStream inputStream;  //下载用的

/**列表*/
public String list() throws Exception {
List<ProcessDefinition> processDefinitionList=processDefinitionService.findAllLatestVersions();
ActionContext.getContext().put("processDefinitionList", processDefinitionList);
return "list";
}

/**部署流程定义页面*/
public String addUI() throws Exception {
return "addUI";
}

/**部署流程定义*/
public String add() throws Exception {
ZipInputStream zipInputStream=new ZipInputStream(new FileInputStream(upload));
processDefinitionService.deploy(zipInputStream);
return "toList";
}

/**删除流程定义*/
public String delete() throws Exception {
processDefinitionService.deleteByKey(key);
return "toList";
}

/**列表*/
public String downloadProcessInmage() throws Exception {
inputStream=processDefinitionService.getProcessImageResourceAsStream(id);
return "downloadProcessInmage";
}

//----------------------
public InputStream getInputStream() {
return inputStream;
}

public void setInputStream(InputStream inputStream) {
this.inputStream = inputStream;
}

public String getKey() {
return key;

}

public File getUpload() {
return upload;
}

public void setUpload(File upload) {
this.upload = upload;
}

public void setKey(String key) {
this.key = key;
}

public String getId() {
return id;
}

public void setId(String id) {
this.id = id;
}

}

2.实现相应的service层的方法

<!-- 审批流转:审批流程管理 -->
<action name="processDefinitionAction_*" class="processDefinitionAction" method="{1}">
<result name="list">/WEB-INF/jsp/processDefinitionAction/list.jsp</result>
<result name="addUI">/WEB-INF/jsp/processDefinitionAction/addUI.jsp</result>
<result name="toList" type="redirectAction">processDefinitionAction_list</result>
<!-- 下载专用的结果配置 -->
<result name="downloadProcessImage" type="stream">
<param name="contentType">image/png</param>
<param name="inputName">inputStream</param>
</result>
</action>