/*
* (non-Javadoc)
*
* @see com.template.service.common.workflow.IProcessDefinitionService#
* exportProcessPic(org.activiti.engine.repository.ProcessDefinition,
* java.lang.String)
*/
@Override
public boolean exportProcessPic(String deploymentId) {
boolean flag = true;
ProcessDefinition processDefinition =
repositoryService.createProcessDefinitionQuery().deploymentId(deploymentId).singleResult();
String diagramResourceName = processDefinition.getDiagramResourceName();
try {
diagramResourceName = processDefinition.getDiagramResourceName();
InputStream imageStream =
repositoryService.getResourceAsStream(
processDefinition.getDeploymentId(), diagramResourceName);
byte[] b = new byte[imageStream.available()];
imageStream.read(b, 0, b.length);
File file =
new File(
workFlowPicPath
+ File.separator
+ processDefinition.getKey()
+ "."
+ FilenameUtils.getExtension(diagramResourceName));
FileUtils.writeByteArrayToFile(file, b);
} catch (IOException e) {
flag = false;
}
return flag;
}
/**
* 读取资源，通过部署ID
*
* @param processDefinitionId 流程定义ID
* @param processInstanceId 流程实例ID
* @param resourceType 资源类型(xml|image)
*/
public InputStream resourceRead(String procDefId, String proInsId, String resType)
throws Exception {
if (StringUtils.isBlank(procDefId)) {
ProcessInstance processInstance =
runtimeService.createProcessInstanceQuery().processInstanceId(proInsId).singleResult();
procDefId = processInstance.getProcessDefinitionId();
}
ProcessDefinition processDefinition =
repositoryService
.createProcessDefinitionQuery()
.processDefinitionId(procDefId)
.singleResult();
String resourceName = "";
if (resType.equals("image")) {
resourceName = processDefinition.getDiagramResourceName();
} else if (resType.equals("xml")) {
resourceName = processDefinition.getResourceName();
}
InputStream resourceAsStream =
repositoryService.getResourceAsStream(processDefinition.getDeploymentId(), resourceName);
return resourceAsStream;
}
/**
* 跳转到流程图型显示页面
*
* @return
*/
public String process_diagram() {
String processDefinitionId = getpara("processDefinitionId");
String processInstanceId = getpara("processInstanceId");
if (processDefinitionId.equals("")) {
ProcessInstance processInstance =
runtimeService
.createProcessInstanceQuery()
.processInstanceId(processInstanceId)
.singleResult();
processDefinitionId = processInstance.getProcessDefinitionId();
}
ProcessDefinition processDefinition =
repositoryService
.createProcessDefinitionQuery()
.processDefinitionId(processDefinitionId)
.singleResult();
InputStream in =
repositoryService.getResourceAsStream(
processDefinition.getDeploymentId(), processDefinition.getDiagramResourceName());
try {
rhs.put("imgWidth", ImageIO.read(in).getWidth());
in.close();
} catch (IOException e) {
e.printStackTrace();
}
rhs.put("processDefinitionId", processDefinitionId);
rhs.put("processInstanceId", processInstanceId);
return "success";
}
/**
* 查看流程定义图
*
* @param request
* @param processDefId 流程定义id
* @return
*/
@RequestMapping(value = "/viewprocessDefImage.do")
public String viewprocessDefImage(
HttpServletRequest request,
HttpServletResponse response,
@RequestParam("processDefId") String processDefId)
throws Exception {
// 根据流程定义id查询流程定义
ProcessDefinition processDefinition =
repositoryService
.createProcessDefinitionQuery()
.processDefinitionId(processDefId)
.singleResult();
InputStream inputStream =
repositoryService.getResourceAsStream(
processDefinition.getDeploymentId(), processDefinition.getDiagramResourceName());
// // 输出资源内容到相应对象
// byte[] b = new byte[1024];
// int len;
// while ((len = inputStream.read(b, 0, 1024)) != -1) {
// response.getOutputStream().write(b, 0, len);
// }
response.getOutputStream().write(IoUtil.readInputStream(inputStream, "processDefInputStream"));
return null;
}
/**
* 读取工作流定义的图片或xml
*
* @throws Exception
*/
@RequestMapping(params = "resourceRead")
public void resourceRead(
@RequestParam("processDefinitionId") String processDefinitionId,
@RequestParam("resourceType") String resourceType,
HttpServletResponse response)
throws Exception {
ProcessDefinition processDefinition =
repositoryService
.createProcessDefinitionQuery()
.processDefinitionId(processDefinitionId)
.singleResult();
String resourceName = "";
if (resourceType.equals("image")) {
resourceName = processDefinition.getDiagramResourceName();
} else if (resourceType.equals("xml")) {
resourceName = processDefinition.getResourceName();
}
InputStream resourceAsStream =
repositoryService.getResourceAsStream(processDefinition.getDeploymentId(), resourceName);
byte[] b = new byte[1024];
int len = -1;
while ((len = resourceAsStream.read(b, 0, 1024)) != -1) {
response.getOutputStream().write(b, 0, len);
}
}
public StreamResource buildStreamResource(
ProcessDefinition processDefinition, RepositoryService repositoryService) {
StreamResource imageResource = null;
if (processDefinition.getDiagramResourceName() != null) {
final InputStream definitionImageStream =
repositoryService.getResourceAsStream(
processDefinition.getDeploymentId(), processDefinition.getDiagramResourceName());
StreamSource streamSource = new InputStreamStreamSource(definitionImageStream);
// Creating image name based on process-definition ID is fine, since the diagram image cannot
// be altered once deployed.
String imageExtension = extractImageExtension(processDefinition.getDiagramResourceName());
String fileName = processDefinition.getId() + "." + imageExtension;
imageResource = new StreamResource(streamSource, fileName, ExplorerApp.get());
}
return imageResource;
}
/** * 显示流程图 * * @return * @throws Exception */
public String getProcessPic() throws Exception {
// String taskId = //
// "2901";//request.getParameter("taskId");3016,552,3020
String procDefId = ""; // request.getParameter("procDefId");
ProcessDefinition procDef =
repositoryService
.createProcessDefinitionQuery()
.processDefinitionId(procDefId)
.singleResult();
String diagramResourceName = procDef.getDiagramResourceName();
InputStream imageStream =
repositoryService.getResourceAsStream(procDef.getDeploymentId(), diagramResourceName);
// request.setAttribute("inputStream", imageStream);
return "SUCCESS";
}
/** 导出图片文件到硬盘 */
public List<String> exportDiagrams(String exportDir) throws IOException {
List<String> files = new ArrayList<String>();
List<ProcessDefinition> list = repositoryService.createProcessDefinitionQuery().list();
for (ProcessDefinition processDefinition : list) {
String diagramResourceName = processDefinition.getDiagramResourceName();
String key = processDefinition.getKey();
int version = processDefinition.getVersion();
String diagramPath = "";
InputStream resourceAsStream =
repositoryService.getResourceAsStream(
processDefinition.getDeploymentId(), diagramResourceName);
byte[] b = new byte[resourceAsStream.available()];
@SuppressWarnings("unused")
int len = -1;
resourceAsStream.read(b, 0, b.length);
// create file if not exist
String diagramDir = exportDir + "/" + key + "/" + version;
File diagramDirFile = new File(diagramDir);
if (!diagramDirFile.exists()) {
diagramDirFile.mkdirs();
}
diagramPath = diagramDir + "/" + diagramResourceName;
File file = new File(diagramPath);
// 文件存在退出
if (file.exists()) {
// 文件大小相同时直接返回否则重新创建文件(可能损坏)
logger.debug("diagram exist, ignore... : {}", diagramPath);
files.add(diagramPath);
} else {
file.createNewFile();
logger.debug("export diagram to : {}", diagramPath);
// wirte bytes to file
FileUtils.writeByteArrayToFile(file, b, true);
files.add(diagramPath);
}
}
return files;
}
/**
* 查看资源文件（bpmn文件和png图片文件）
*
* @throws IOException
*/
public void viewResource() throws IOException {
// 1.获得流程定义
ProcessDefinition pd =
repositoryService
.createProcessDefinitionQuery()
.processDefinitionId(model.getId())
.singleResult();
System.out.println(pd.getId());
// 2.读取资源流
InputStream inputStream =
repositoryService.getResourceAsStream(pd.getDeploymentId(), pd.getDiagramResourceName());
// 3.输出资源内容到页面
byte[] b = new byte[1024];
int len = -1;
while ((len = inputStream.read(b, 0, 1024)) != -1) {
response.getOutputStream().write(b, 0, len);
}
}
/**
* 流程图型显示
*
* @return
*/
public String process_diagram_simple() {
try {
HttpServletResponse resp = ServletActionContext.getResponse();
String processDefinitionId = getpara("processDefinitionId");
ProcessDefinition processDefinition =
repositoryService
.createProcessDefinitionQuery()
.processDefinitionId(processDefinitionId)
.singleResult();
InputStream in =
repositoryService.getResourceAsStream(
processDefinition.getDeploymentId(), processDefinition.getDiagramResourceName());
/*ImageIO.read(in).getWidth();
resp.setContentType("image/png");
ServletOutputStream out = resp.getOutputStream();
BufferedInputStream bin = new BufferedInputStream(in);
byte[] b = new byte[1024];
int l = bin.read(b);
while (l != -1) {
out.write(b);
l = bin.read(b);
}
bin.close();
in.close();
out.flush();
out.close();*/
// resp.setContentType("image/png");
byte[] b = new byte[1024];
int len = -1;
while ((len = in.read(b, 0, 1024)) != -1) {
resp.getOutputStream().write(b, 0, len);
}
} catch (IOException e) {
e.printStackTrace();
}
return null;
}
