oa_21

oa_21:

添加动态表单呈现层代码

- 理解批量数据的提交技巧(AutoArrayList.java)

添加的代码包括：
web/AutoArrayList.java
web/forms/FlowFormActionForm.java
web/actions/FlowFormAction.java

修改配置文件，加上formManager和formAction的配置：
applicationContext-actions.xml
applicationContext-beans.xml

WebRoot/WEB-INF/struts-config.xml

添加的JSP：
WebRoot/form/*.jsp

package com.bjsxt.oa.web;

import java.util.ArrayList;

public class AutoArrayList extends ArrayList {
    
    private Class itemClass;
    
    public AutoArrayList(Class itemClass) {
        this.itemClass = itemClass;
    }
    
    public Object get(int index) {
        try {
            while (index >= size()) {
                add(itemClass.newInstance());
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
        return super.get(index);
    }
}

package com.bjsxt.oa.web.actions;

import java.util.Iterator;
import java.util.List;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;

import com.bjsxt.oa.manager.FormManager;
import com.bjsxt.oa.manager.WorkflowManager;
import com.bjsxt.oa.model.FieldItem;
import com.bjsxt.oa.model.FlowForm;
import com.bjsxt.oa.model.FormField;
import com.bjsxt.oa.model.Workflow;
import com.bjsxt.oa.web.forms.FlowFormActionForm;

public class FlowFormAction extends BaseAction {

	private FormManager formManager;
	private WorkflowManager workflowManager;
	
	//主界面，显示所有的流程信息
	@Override
	protected ActionForward unspecified(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) throws Exception {
		
		//获取所有流程信息进行显示
		request.setAttribute("workflows", workflowManager.searchAllWorkflows());
		
		return mapping.findForward("index");
	}
	
	//打开某个流程表单的定义界面
	public ActionForward addFormInput(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) throws Exception {
		
		FlowFormActionForm ffaf = (FlowFormActionForm)form;
		
		int workflowId = ffaf.getWorkflowId();
		
		Workflow workflow = workflowManager.findWorkflow(workflowId);
		FlowForm flowForm = formManager.findForm(workflowId);
		
		request.setAttribute("flowForm", flowForm);
		request.setAttribute("workflow", workflow);
		
		return mapping.findForward("form_input");
	}
	
	//添加流程表单
	public ActionForward addForm(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) throws Exception {
		
		FlowFormActionForm ffaf = (FlowFormActionForm)form;
		
		FlowForm flowform = new FlowForm();
		flowform.setTemplate(ffaf.getTemplate());
		flowform.setId(ffaf.getId());
		formManager.addForm(flowform, ffaf.getWorkflowId());

		ActionForward forward = new ActionForward();
		forward.setPath("/flowform.do?method=addFormInput&workflowId="+ffaf.getWorkflowId());
		forward.setRedirect(true);
		return forward;
	}
	
	//打开界面，输入表单域，在这个界面上，需要选择表单域的类型和输入形式
	public ActionForward formFieldInput(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) throws Exception {
		
		FlowFormActionForm ffaf = (FlowFormActionForm)form;
		
		request.setAttribute("fieldtypes", formManager.searchFieldTypes());
		request.setAttribute("fieldinputs", formManager.searchFieldInputs());
		
		return mapping.findForward("formfield_input");
	}
	
	//添加表单域
	public ActionForward addFormField(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) throws Exception {
		
		FlowFormActionForm ffaf = (FlowFormActionForm)form;
		
		FormField field = new FormField();
		field.setId(ffaf.getId());
		field.setFieldLabel(ffaf.getFieldLabel());
		field.setFieldName(ffaf.getFieldName());
		
		formManager.addField(field, ffaf.getFormId(), ffaf.getFieldTypeId(), ffaf.getFieldInputId());
		
		return mapping.findForward("pub_add_success");
	}
	
	//删除表单域
	public ActionForward delField(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) throws Exception {
		
		FlowFormActionForm ffaf = (FlowFormActionForm)form;
		
		formManager.delField(ffaf.getId());
		
		return mapping.findForward("pub_del_success");
	}
	
	//给某个表单域添加条目（输入界面），列出已有的条目
	public ActionForward addItemInput(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) throws Exception {
		
		FlowFormActionForm ffaf = (FlowFormActionForm)form;
		
		//首先根据ID的值，加载表单域
		FormField field = formManager.findFormField(ffaf.getId());
		
		request.setAttribute("field", field);
		
		return mapping.findForward("item_input");
	}
	
	//添加条目
	public ActionForward addItem(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) throws Exception {
		
		FlowFormActionForm ffaf = (FlowFormActionForm)form;
		List items = ffaf.getItems();
		for (Iterator iter = items.iterator(); iter.hasNext();) {
			FieldItem item = (FieldItem) iter.next();
			//如果没有输入任何值，则忽略不处理
			if(item == null || item.getValue() == null || item.getValue().trim().equals("")){
				iter.remove();
			}
		}
		formManager.updateFieldItems(ffaf.getId(), ffaf.getItems());
		
		return mapping.findForward("pub_add_success");
	}

	public void setFormManager(FormManager formManager) {
		this.formManager = formManager;
	}

	public void setWorkflowManager(WorkflowManager workflowManager) {
		this.workflowManager = workflowManager;
	}
	
}

package com.bjsxt.oa.web.forms;

import org.apache.struts.action.ActionForm;
import org.apache.struts.upload.FormFile;

public class WorkflowActionForm extends ActionForm {
	private int id;
	private String name;
	private FormFile processDef;
	private FormFile processImage;
	
	public int getId() {
		return id;
	}
	public void setId(int id) {
		this.id = id;
	}
	public String getName() {
		return name;
	}
	public void setName(String name) {
		this.name = name;
	}
	public FormFile getProcessDef() {
		return processDef;
	}
	public void setProcessDef(FormFile processDef) {
		this.processDef = processDef;
	}
	public FormFile getProcessImage() {
		return processImage;
	}
	public void setProcessImage(FormFile processImage) {
		this.processImage = processImage;
	}
}