读取HTML页面form信息并生成pojo的小工具

<a style="190px;" onclick="createPojo()" ><img src="images/ponderui/icon/execute.png" alt=""/>生成pojo</a>

var pForms;
function createPojo(){
    var forms = document.forms;
    if(forms.length>0){
        pForms = forms;
        window.open("<%=request.getContextPath()%>/createPojoJavaCode.html");
    }else{
        alert("该页面没有form！");
    }
    Event.stop(event);
}

弹出的HTML页面代码：

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<!-- Don't modify the document!!! -->
<HTML xmlns:ctais>
<HEAD>
<META http-equiv="Content-Type" content="text/html; charset=UTF-8">
<META HTTP-EQUIV="Pragma" CONTENT="no-cache">
<META HTTP-EQUIV="author" CONTENT="zhanggx">
<TITLE>生成pojo</TITLE>
</HEAD>
<BODY>
<div>
    <h2>代码</h2>
    <textarea id="textArea" rows="10" cols="100"></textarea>
</div>
</BODY>
</HTML>

<script type="text/javascript">
    String.prototype.trim=function() {
        return this.replace(/(^\s*)|(\s*$)/g,'');
    };
    var forms = window.opener.pForms;
    if(forms){
        var fragment = document.createDocumentFragment();
        for(var i=0; i<forms.length; i++){
            var table = document.createElement("table");
            //("<table id='table" + i +"' width='100%' border='1'  style='border-color:#000000;border-collapse:collapse'></table>");
            table.id = "table"+i;
            table.width = "100%";
            table.border = "1";
            table.style.borderColor = "#000000";
            table.style.borderCollapse = "collapse";
            
            var trIndex = 1;
            
            var tbody = document.createElement("tbody");
            table.appendChild(tbody);

            tbody.insertRow(0);
            tbody.rows[0].insertCell(0);
            tbody.rows[0].cells[0].appendChild(document.createTextNode("字段lable(供参考)"));
            tbody.rows[0].insertCell(1);
            tbody.rows[0].cells[1].appendChild(document.createTextNode("字段type"));
            tbody.rows[0].insertCell(2);
            tbody.rows[0].cells[2].appendChild(document.createTextNode("字段name"));
            tbody.rows[0].insertCell(3);
            tbody.rows[0].cells[3].appendChild(document.createTextNode("操作"));

            var inputs = forms[i].getElementsByTagName("input");
            var selects = forms[i].getElementsByTagName("select");
            var textares = forms[i].getElementsByTagName("textarea");

            for(var j=0; j<inputs.length; j++){
                var ele = inputs[j];
                if(ele.name){
                    var type = inputs[j].type || "text";
                    type = type.toLowerCase();
    
                    
                    var lableVal = "";
                    var dataType = "String";
                    
                    if(type=="text"){
                        var inputTableCells = ele.parentNode.parentNode.cells;
                        if(inputTableCells){
                            for(var x=0; x<inputTableCells.length; x++){
                                if(inputTableCells[x] == ele.parentNode){
                                    var lableTd = inputTableCells[x-2];
                                    var textNode = lableTd.childNodes[0];
                                    if(textNode.nodeType==3 && textNode.nodeValue.trim()!=""){
                                        lableVal = textNode.nodeValue;
                                    }
                                    var nextNode = textNode.nextSibling;
                                    if(nextNode && nextNode.nodeType==3 && nextNode.nodeValue.trim()!=""){
                                        lableVal += nextNode.nodeValue;
                                    }
                                }
                            }
                        }
                        
                        var mode = ele.getAttribute("mode");
                        if(mode){
                            if(mode=="date"){
                                dataType = "java.sql.Date";
                            }else if(mode == "datetime"){
                                dataType = "java.sql.Timestamp";
                            }else if(mode == "int"){
                                dataType = "int";
                            }else{
                                dataType = "java.math.BigDecimal";
                            }
                        }
                    }
                    var trObj = tbody.insertRow(-1);
                    trObj.insertCell(0);
                    var lableInput = document.createElement("input");
                    lableInput.name = "inputLable";
                    lableInput.value = lableVal;
                    trObj.cells[0].appendChild(lableInput);
                    
                    trObj.insertCell(1);
                    var typeInput = document.createElement("input");
                    typeInput.name = "inputType";
                    typeInput.value = dataType;
                    trObj.cells[1].appendChild(typeInput);
                    
                    trObj.insertCell(2);
                    var nameInput = document.createElement("input");
                    nameInput.name = "inputName";
                    nameInput.value = ele.name;
                    trObj.cells[2].appendChild(nameInput);
    
                    trObj.insertCell(3);
                    var a = document.createElement("a");
                    a.href = "javascript:deleteRow("+ (trIndex++) +","+ i +")";
                    a.appendChild(document.createTextNode("删除"));
                    trObj.cells[3].appendChild(a);
                }
            }
            for(var j=0; j<selects.length; j++){
                var ele = selects[j];
                if(ele.name){
                    var lableVal = "";
                    var dataType = "String";
    
                    var inputTableCells = ele.parentNode.parentNode.cells;
                    for(var x=0; x<inputTableCells.length; x++){
                        if(inputTableCells[x] == ele.parentNode){
                            var lableTd = inputTableCells[x-2];
                            var textNode = lableTd.childNodes[0];
                            if(textNode.nodeType==3 && textNode.nodeValue.trim()!=""){
                                lableVal = textNode.nodeValue;
                            }
                            var nextNode = textNode.nextSibling;
                            if(nextNode && nextNode.nodeType==3 && nextNode.nodeValue.trim()!=""){
                                lableVal += nextNode.nodeValue;
                            }
                        }
                    }
                    
                    var trObj = tbody.insertRow(-1);
                    trObj.insertCell(0);
                    var lableInput = document.createElement("input");
                    lableInput.name = "inputLable";
                    lableInput.value = lableVal;
                    trObj.cells[0].appendChild(lableInput);
                    
                    trObj.insertCell(1);
                    var typeInput = document.createElement("input");
                    typeInput.name = "inputType";
                    typeInput.value = dataType;
                    trObj.cells[1].appendChild(typeInput);
                    
                    trObj.insertCell(2);
                    var nameInput = document.createElement("input");
                    nameInput.name = "inputName";
                    nameInput.value = ele.name;
                    trObj.cells[2].appendChild(nameInput);
    
                    trObj.insertCell(3);
                    var a = document.createElement("a");
                    a.href = "javascript:deleteRow("+ (trIndex++) +","+ i +")";
                    a.appendChild(document.createTextNode("删除"));
                    trObj.cells[3].appendChild(a);
                }
            }
            for(var j=0; j<textares.length; j++){
                var ele = textares[j];
                if(ele.name){
                    var lableVal = "";
                    var dataType = "String";
    
                    var inputTableCells = ele.parentNode.parentNode.cells;
                    for(var x=0; x<inputTableCells.length; x++){
                        if(inputTableCells[x] == ele.parentNode){
                            var lableTd = inputTableCells[x-2];
                            var textNode = lableTd.childNodes[0];
                            if(textNode.nodeType==3 && textNode.nodeValue.trim()!=""){
                                lableVal = textNode.nodeValue;
                            }
                            var nextNode = textNode.nextSibling;
                            if(nextNode && nextNode.nodeType==3 && nextNode.nodeValue.trim()!=""){
                                lableVal += nextNode.nodeValue;
                            }
                        }
                    }
                    
                    var trObj = tbody.insertRow(-1);
                    trObj.insertCell(0);
                    var lableInput = document.createElement("input");
                    lableInput.name = "inputLable";
                    lableInput.value = lableVal;
                    trObj.cells[0].appendChild(lableInput);
                    
                    trObj.insertCell(1);
                    var typeInput = document.createElement("input");
                    typeInput.name = "inputType";
                    typeInput.value = dataType;
                    trObj.cells[1].appendChild(typeInput);
                    
                    trObj.insertCell(2);
                    var nameInput = document.createElement("input");
                    nameInput.name = "inputName";
                    nameInput.value = ele.name;
                    trObj.cells[2].appendChild(nameInput);
    
                    trObj.insertCell(3);
                    var a = document.createElement("a");
                    a.href = "javascript:deleteRow("+ (trIndex++) +","+ i +")";
                    a.appendChild(document.createTextNode("删除"));
                    trObj.cells[3].appendChild(a);
                }
            }

            var trObj = tbody.insertRow();
            var tdObj = trObj.insertCell();
            tdObj.colspan = "4";
            tdObj.align = "left";
            var bt = document.createElement("button");
            bt.onclick = executeCode;
            bt.appendChild(document.createTextNode("生成pojo"))
            tdObj.appendChild(bt);
            
            fragment.appendChild(table);
        }
        document.body.appendChild(fragment);
        document.writeln("<br>");
    }
    function deleteRow(trIndex,tableIndex){
        if(window.confirm("确认删除此行？")){
            document.getElementById("table"+tableIndex).deleteRow(trIndex);
        }
    }
    function executeCode(){
        var table = document.getElementById(event.srcElement.parentNode.parentNode.parentNode.parentNode.id);
        var values = table.getElementsByTagName("input");
        var pojoText = "";
        var index = 0;
        for(var i=0; i<(values.length/3); i++){
            pojoText += "//";
            pojoText += values[index++].value;
            pojoText += "\r";
            pojoText += "private ";
            pojoText +=  values[index++].value;
            pojoText += " ";
            pojoText +=  values[index++].value;
            pojoText += ";\r";
        }
        var childNode = document.getElementById("textArea").childNodes[0];
        var newNode = document.createTextNode(pojoText);
        if(childNode){
            document.getElementById("textArea").replaceChild(newNode,childNode);
        }else{
            document.getElementById("textArea").appendChild(newNode);
        }
    }
</script>

效果图：

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原文地址：https://www.cnblogs.com/yangzhilong/p/3056032.html