通用代码管理

来源：互联网发布：fanuc编程模拟软件编辑：程序博客网时间：2024/06/03 08:05

经过一晚上的思考，我把我的通用代码管理做成了这样：后台维护、前台调用。
后台维护、贴出表结构和操作界面
字典管理

展示页面通过监听器在web初始化的时候把数据存到application中，以MAP形式记录、以下为

@Component("DfcodeIntListener")public class DfcodeIntListener implements ApplicationListener {    @Resource    private DfcodeIntServices dfcodeIntServices;    @Resource    private ServletContext servletContext;    @Override    public void onApplicationEvent(ApplicationEvent applicationEvent) {       // System.out.println("here:"+servletContext.getContextPath());        //初始化代码表的数据到内存中        servletContext.setAttribute("dfcodedata",dfcodeIntServices.listDffcode());    }}

当有其它表中记录了代码表数据时，通过map.get(key)来取显示代码名称，其中有JS中使用及jsp中使用，

js中代码：

/** * Created by liting on 2016/12/19 * 初始化代码数据到缓存中 */@Controller@RequestMapping(value = "/data")public class DfcodeIntController {    @RequestMapping(value = "/dffcode.html")    @ResponseBody    public Map  dffcode(HttpServletRequest request, HttpServletResponse response) {        Map<String,String> map = (Map<String,String>)request.getSession().getServletContext().getAttribute("dfcodedata");        String key = request.getParameter("key");        String rs = "";        Map map1 = new HashMap();        try {            if (!StringFacs.isEmpty(key))    rs =  map.get(key);        }catch (Exception e){        }        map1.put("rs",rs);        return map1;    }} function dffcodeconvert(paKey){    var ls = "";    $.ajax({        type: "GET",        url: g_BasePath + "data/dffcode.html",        data: {key: paKey},        async: false,        error: function (request) {            alert("出错了！");        },        success: function (data) {            ls = data;        }    });    return JSON.parse(ls).rs;}

jsp中通过自定标签来取：

  <tag>    <name>dffcode</name>    <tag-class>yys.lt.tags.DffcodeTag</tag-class>    <body-content>JSP</body-content>    <description>liting dffcode tag</description>    <attribute>      <name>codekey</name>      <required>true</required>      <rtexprvalue>true</rtexprvalue>    </attribute>  </tag>

package yys.lt.tags;import yys.lt.tools.StringFacs;import javax.servlet.http.HttpServletRequest;import javax.servlet.jsp.JspException;import javax.servlet.jsp.tagext.BodyTagSupport;import java.io.IOException;import java.util.Map;/** * Created by liting on 2016/12/22. *通过传入代码ID,返回代码名称 * */public class DffcodeTag extends BodyTagSupport {    public String getCodekey() {        return codekey;    }    public void setCodekey(String codekey) {        this.codekey = codekey;    }    private String codekey;    @Override    public int doStartTag() throws JspException { // 在标签开始处出发该方法        int ri = BodyTagSupport.EVAL_BODY_INCLUDE;        //HttpServletRequest request=(HttpServletRequest) pageContext.getRequest();        Map<String,String> map = (Map<String,String>)pageContext.getServletContext().getAttribute("dfcodedata");        try {            if(!StringFacs.isEmpty(codekey)) pageContext.getResponse().getWriter().write(map.get(codekey));        } catch (IOException e) {            e.printStackTrace();        }finally {            return ri;        }        //BodyTagSupport.SKIP_BODY      //  return ri;// 返回此则执行标签body中内容，SKIP_BODY则不执行    }    @Override    public int doEndTag() throws JspException {        return BodyTagSupport.EVAL_BODY_INCLUDE;    }}

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