package org.jeecg.modules.activiti.controller;
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import com.fasterxml.jackson.databind.ObjectMapper;
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import com.fasterxml.jackson.databind.node.ObjectNode;
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import org.activiti.engine.ActivitiException;
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import org.activiti.engine.RepositoryService;
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import org.activiti.engine.repository.Model;
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import org.apache.batik.transcoder.TranscoderInput;
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import org.apache.batik.transcoder.TranscoderOutput;
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import org.apache.batik.transcoder.image.PNGTranscoder;
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import org.apache.commons.io.IOUtils;
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import org.apache.commons.lang.StringUtils;
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import org.springframework.beans.factory.annotation.Autowired;
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import org.springframework.web.bind.annotation.*;
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import javax.servlet.http.HttpServletRequest;
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import java.io.ByteArrayInputStream;
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import java.io.ByteArrayOutputStream;
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import java.io.InputStream;
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import java.nio.charset.StandardCharsets;
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/**
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* 模型控制
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*
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* @author len
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* @date 2019/06/13
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*/
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@RestController
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@RequestMapping("/service")
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public class ServiceController {
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@Autowired
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ObjectMapper objectMapper;
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@Autowired
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private RepositoryService repositoryService;
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/**
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* stencilset
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*
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* @return stencilset.json
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*/
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@RequestMapping(value="/editor/stencilset", method = RequestMethod.GET, produces = "application/json;charset=utf-8")
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public String getStencilset() {
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InputStream stencilsetStream = this.getClass().getResourceAsStream("/static/stencilset.json");
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try {
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return IOUtils.toString(stencilsetStream, "utf-8");
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} catch (Exception e) {
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throw new ActivitiException("Error while loading stencil set", e);
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}
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}
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/**
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* 模型详情
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*
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* @param modelId
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* @return
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*/
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@RequestMapping(value="/model/{modelId}/json", method = RequestMethod.GET)
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public ObjectNode getEditorJson(@PathVariable String modelId) {
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ObjectNode modelNode = null;
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Model model = repositoryService.getModel(modelId);
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if (model != null) {
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try {
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if (StringUtils.isNotEmpty(model.getMetaInfo())) {
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modelNode = (ObjectNode)objectMapper.readTree(model.getMetaInfo());
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} else {
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modelNode = objectMapper.createObjectNode();
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modelNode.put("name", model.getName());
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}
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modelNode.put("modelId", model.getId());
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ObjectNode editorJsonNode = (ObjectNode)objectMapper
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.readTree(new String(repositoryService.getModelEditorSource(model.getId()), "utf-8"));
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modelNode.set("model", editorJsonNode);
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} catch (Exception e) {
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throw new ActivitiException("Error creating model JSON", e);
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}
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}
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return modelNode;
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}
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/**
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* 保存
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*
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* @param modelId
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* @param name
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* @param jsonXml
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* @param svgXml
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* @param description
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*/
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@RequestMapping(value = "/model/{modelId}/save", method=RequestMethod.PUT)
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public void saveModel(@PathVariable String modelId, @RequestParam("name") String name,
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@RequestParam("json_xml") String jsonXml, @RequestParam("svg_xml") String svgXml,
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@RequestParam("description") String description,HttpServletRequest req) {
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try {
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String tenantId = req.getHeader("tenant-id");
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Model model = repositoryService.getModel(modelId);
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ObjectNode modelJson = (ObjectNode)objectMapper.readTree(model.getMetaInfo());
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modelJson.put("name", name);
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modelJson.put("description", description);
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model.setMetaInfo(modelJson.toString());
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model.setName(name);
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model.setVersion(model.getVersion()+1);
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model.setTenantId(tenantId);
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repositoryService.saveModel(model);
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repositoryService.addModelEditorSource(model.getId(), jsonXml.getBytes(StandardCharsets.UTF_8));
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InputStream svgStream = new ByteArrayInputStream(svgXml.getBytes(StandardCharsets.UTF_8));
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TranscoderInput input = new TranscoderInput(svgStream);
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PNGTranscoder transcoder = new PNGTranscoder();
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ByteArrayOutputStream outStream = new ByteArrayOutputStream();
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TranscoderOutput output = new TranscoderOutput(outStream);
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transcoder.transcode(input, output);
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final byte[] result = outStream.toByteArray();
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repositoryService.addModelEditorSourceExtra(model.getId(), result);
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outStream.close();
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} catch (Exception e) {
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throw new ActivitiException("Error saving model", e);
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}
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}
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}
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