SpringBoot入門十五,新增Activiti5.22工作流線上編輯器
阿新 • • 發佈:2019-01-03
線上編輯器可以直接參考,springMVC整合activiti-explorer5.22(一)中的第2、3、4步,以及springMVC整合activiti-explorer5.22(二)的配置,基本整合基本完成,這裡來著重說一下在springboot中需要修改的地方.
1.修改ModelSaveRestResource.java類
import java.io.ByteArrayInputStream; import java.io.ByteArrayOutputStream; import java.io.InputStream; import org.activiti.editor.constants.ModelDataJsonConstants; import org.activiti.engine.ActivitiException; import org.activiti.engine.RepositoryService; import org.activiti.engine.repository.Model; import org.apache.batik.transcoder.TranscoderInput; import org.apache.batik.transcoder.TranscoderOutput; import org.apache.batik.transcoder.image.PNGTranscoder; import org.apache.logging.log4j.LogManager; import org.apache.logging.log4j.Logger; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.http.HttpStatus; import org.springframework.util.MultiValueMap; import org.springframework.web.bind.annotation.PathVariable; import org.springframework.web.bind.annotation.RequestBody; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RequestMethod; import org.springframework.web.bind.annotation.RequestParam; import org.springframework.web.bind.annotation.ResponseStatus; import org.springframework.web.bind.annotation.RestController; import com.alibaba.fastjson.JSONObject; import com.fasterxml.jackson.databind.ObjectMapper; import com.fasterxml.jackson.databind.node.ObjectNode; @RestController @RequestMapping(value = "/service") public class ModelSaveRestResource implements ModelDataJsonConstants { private static final Logger LOGGER = LogManager.getLogger(ModelSaveRestResource.class); @Autowired private RepositoryService repositoryService; @Autowired private ObjectMapper objectMapper; @RequestMapping(value = "/model/{modelId}/save", method = RequestMethod.PUT) @ResponseStatus(value = HttpStatus.OK) public void saveModel(@PathVariable String modelId, @RequestParam("name") String name, @RequestParam("json_xml") String json_xml, @RequestParam("svg_xml") String svg_xml, @RequestParam("description") String description) { try { Model model = repositoryService.getModel(modelId); ObjectNode modelJson = (ObjectNode) objectMapper.readTree(model.getMetaInfo()); modelJson.put(MODEL_NAME, name); modelJson.put(MODEL_DESCRIPTION, description); model.setMetaInfo(modelJson.toString()); model.setName(name); repositoryService.saveModel(model); repositoryService.addModelEditorSource(model.getId(),json_xml.getBytes("utf-8")); InputStream svgStream = new ByteArrayInputStream(svg_xml.getBytes("utf-8")); TranscoderInput input = new TranscoderInput(svgStream); PNGTranscoder transcoder = new PNGTranscoder(); // Setup output ByteArrayOutputStream outStream = new ByteArrayOutputStream(); TranscoderOutput output = new TranscoderOutput(outStream); // Do the transformation transcoder.transcode(input, output); final byte[] result = outStream.toByteArray(); repositoryService.addModelEditorSourceExtra(model.getId(), result); outStream.close(); } catch (Exception e) { LOGGER.error("Error saving model", e); throw new ActivitiException("Error saving model", e); } } }
2.修改stencilset.json檔案的獲取位置
由於在Springboot中靜態檔案都是放在resources/static中的,因此也需要修改StencilsetRestResource.java中獲取檔案的位置,如下即可
InputStream stencilsetStream = getClass().getClassLoader().getResourceAsStream("static/activiti/stencilset.json");
3.解決流程圖中文儲存亂碼的問題
新建一個CustomActivitiConfig.java的配置類即可,程式碼如下
import org.activiti.spring.SpringProcessEngineConfiguration; import org.activiti.spring.boot.ProcessEngineConfigurationConfigurer; import org.springframework.stereotype.Component; @Component public class CustomActivitiConfig implements ProcessEngineConfigurationConfigurer { /** * Overriding * <h5>功能:設定流程圖中中文字型,防止流程圖顯示亂碼</h5> * @param processEngineConfiguration */ @Override public void configure(SpringProcessEngineConfiguration processEngineConfiguration) { processEngineConfiguration.setActivityFontName("宋體"); processEngineConfiguration.setLabelFontName("宋體"); processEngineConfiguration.setAnnotationFontName("宋體"); } }
至此,整合結束