应用场景为，一个file选择上传一个xml，然后点击预览。此时是先上传xml到服务器，然后读取xml并格式化返回json数据，然后获取该json，加载到页面之后，用SyntaxHighlighter插件动态高亮该段上传的xml代码。关键代码如下：
首先是文件上传并重命名，随后把上传之后的文件格式化转为json。代码如下：
@RequestMapping(value = "fileUpload.s", method = RequestMethod.POST)
// public String fileUpload(@RequestParam("file") MultipartFile file) {
public void fileUpload(HttpServletResponse response,HttpServletRequest request) {
WebResult result=new WebResult();
result.setResult(WebResult.WEB_RESULT_FAIL);
MultipartHttpServletRequest multipartHttpServletRequest= (MultipartHttpServletRequest) request;
// MultipartHttpServletRequest multipartHttpServletRequest= new DefaultMultipartHttpServletRequest(request);
MultipartFile file=multipartHttpServletRequest.getFile("exmlPath");
String filename=new SimpleDateFormat("yyyyMMddHHmmss").format(new Date())+file.getOriginalFilename().substring(file.getOriginalFilename().indexOf('.'));
// 判断文件是否为空
if (!file.isEmpty()) {
try {
// 文件保存路径
String filePath = request.getSession().getServletContext().getRealPath("/") + getPicUpload()+ filename;
File dirPath = new File(request.getSession().getServletContext().getRealPath("/") + getPicUpload());
if (!dirPath.exists()) {
dirPath.mkdirs();
}
// 转存文件
file.transferTo(new File(filePath));
// Resource res=new ServletContextResource(ContextLoader.getCurrentWebApplicationContext().getServletContext(),"/upload/type.xml");
Resource res=new ServletContextResource(request.getSession().getServletContext(),getPicUpload()+filename);
InputStream stream=res.getInputStream();
BufferedReader br=new BufferedReader(new InputStreamReader(stream,"gbk"));
String temp=null;
StringBuffer sb=new StringBuffer();
temp=br.readLine();
while(temp!=null){
sb.append(temp);
temp=br.readLine();
}
try {
JsonGenerator generator = objectMapper.getJsonFactory().createJsonGenerator(response.getOutputStream(), JsonEncoding.UTF8);
result.setName(filename);
result.setReason(XmlFormat.format(sb.toString()));
result.setResult(WebResult.WEB_RESULT_SUCCESS);
objectMapper.writeValue(generator, result);
} catch (IOException e) {
logger.error("Upload failed: JSON convertion error.");
}
} catch (Exception e) {
// e.printStackTrace();
logger.error("文件上传错误！错误详情为："+e.getLocalizedMessage());
}
}
} public class XmlFormat {
public static String format(String str){
// System.out.println(" str : " + str);
SAXReader reader = new SAXReader();
// System.out.println(reader);
// 注释：创建一个串的字符输入流
StringReader in = new StringReader(str);
StringWriter out = null;
try {
Document doc = reader.read(in);
// System.out.println(doc.getRootElement());
// 注释：创建输出格式
OutputFormat formater = OutputFormat.createPrettyPrint();
//formater=OutputFormat.createCompactFormat();
// 注释：设置xml的输出编码
formater.setEncoding("utf-8");
// 注释：创建输出(目标)
out = new StringWriter();
// 注释：创建输出流
XMLWriter writer = new XMLWriter(out, formater);
// 注释：输出格式化的串到目标中，执行后。格式化后的串保存在out中。
writer.write(doc);
writer.close();
} catch (DocumentException e) {
// e.printStackTrace();
return "xml格式错误,请仔细检查!详细信息为："+e.getLocalizedMessage();
} catch (IOException e) {
// e.printStackTrace();
return "上传IO错误,请仔细检查!详细信息为："+e.getLocalizedMessage();
}
// 注释：返回我们格式化后的结果
return out.toString();
}
public static void main(String[] args) throws Exception {
String head="<?xml version=\"1.0\" encoding=\"GBK\"?>";
String str = "<RequestData><HeadData><UserCode>sh1_admin</UserCode><UserName>sh1_admin</UserName><UserCompanyCode>3107</UserCompanyCode><UserCompanyName>上海分公司一部</UserCompanyName><RequestType>03</RequestType></HeadData><BodyData><ReportId>113100000033</ReportId><Insurant>a5rfg87</Insurant><NumberPlate>沪E78612</NumberPlate><EngineModel></EngineModel><CarVin></CarVin><AccidentDate>2011-02-25 15:07:00</AccidentDate><ReportDate>2011-02-25 15:07:00</ReportDate><Province>310000</Province><City>310100</City><District></District><AccidentPlace>1</AccidentPlace><AccidentLongitude></AccidentLongitude><AccidentLatitude></AccidentLatitude><SurveyLongitude></SurveyLongitude><SurveyLatitude></SurveyLatitude><SceneReportFlag></SceneReportFlag><Reporter></Reporter><ReporterTel></ReporterTel><SurveyPlace></SurveyPlace><OperatorId>3525</OperatorId><OperatorName>sh_admin</OperatorName><ReportDealId>30000800</ReportDealId><ReportDealName>江苏分公司</ReportDealName><CompanyName></CompanyName><CustomerTypeCode></CustomerTypeCode><ForcePolicyId>a5rfg87a5rfg87a5rfg87</ForcePolicyId><BizPolicyId></BizPolicyId><Index>0</Index><FieldName>5</FieldName></BodyData></RequestData>";
// System.out.println(str);
format(str);
}
}随后，页面上使用ajaxFileUpload插件，ajax上传选中的xml并接受服务端返回的json，代码如下：
jQuery.ajaxFileUpload({
url:'fileUpload.s',
secureuri:false,
fileElementId:'exmlPath',
dataType:'JSON',
success:function(data,status){
//多次选择文件上传时，需先清空xmlPre这个div的html内容，否则SyntaxHighlighter渲染之后的html不会变
jQuery("#xmlPre").html("<div><pre id='xmlcontnt' class='brush: xml;'></pre></div>");
jQuery("#xmlPre").removeAttr("style","");
jQuery("#xmlPre").removeAttr("class","");
//-----------------------------------------------------------------------
data=jQuery.parseJSON(jQuery(data).text()); //转化ajaxFileUpload插件返回的json，它会包裹一个pre标签
if(data.result==0){
$("#xmlname").val(data.name);
// alert(data.reason);
// console.log(data.reason);
$("#xmlcontnt").text(data.reason); //将json格式的xml放入页面空的div中
SyntaxHighlighter.highlight(); //调用插件的高亮方法，渲染高亮
jQuery("#xmlPre").dialog({ //高亮后的代码所在div页面，以弹出层方式弹出，用以预览
minHeight: 300, width: 650,
position: "top", title: "上传xml预览" });
jQuery("#xmlPre").dialog('open');
// $('.theme-popover-mask').fadeIn(100);
// $('.theme-popover').slideDown(200);
}else if(data.result==1){
alert("上传失败!");
}else{
alert("未知错误!");
}
},
error:function (s, xml, status, e) {
alert(s, xml, status, e)
}
});<div id="xmlPre" style="display:none;border: 1">
<pre >
<pre id="xmlcontnt" class="brush: xml;">
</pre>
</pre>
</div>SyntaxHighlighter2.1.364动态代码高亮,布布扣,bubuko.com
SyntaxHighlighter2.1.364动态代码高亮
原文地址：http://blog.csdn.net/phantomes/article/details/38079205
