将各种数据转换JSON格式

package com.tag; import javax.servlet.jsp.JspException; import javax.servlet.jsp.JspWriter; import javax.servlet.jsp.tagext.TagSupport; public class PageTag extends TagSupport{ //定义分页属性 private int pageNo=1; private int pageSize; private int count; private String var; public int getPageSize() { return pageSize; } public void setPageSize(int pageSize) { this.pageSize = pageSize; } public int getCount() { return count; } public void setCount(int count) { this.count = count; } public String getVar() { return var; } public void setVar(String var) { this.var = var; } private String outt; @Override public int doStartTag() throws JspException { Object obj=pageContext.getAttribute("pageNo",pageContext.REQUEST_SCOPE); if(obj!=null){ pageNo=(Integer)obj; } outt="共"+count+"条数据,当前"+pageNo+"/"+(count%pageSize==0?(count/pageSize):(count/pageSize+1))+"页"; //得到数据 if(pageSize-->0){ pageContext.setAttribute(var, "这是第一条数据<br/>"); return super.EVAL_BODY_INCLUDE; }else{ return super.SKIP_BODY; } } @Override public int doAfterBody() throws JspException { if(pageSize==0){ try { //得到输出流 JspWriter out=pageContext.getOut(); out.print(outt); } catch (Exception e) { // TODO: handle exception e.printStackTrace(); } } if(pageSize-->0){ pageContext.setAttribute(var, "这是循环数据<br/>"); System.out.println(pageSize); return super.EVAL_BODY_AGAIN; }else{ return super.SKIP_BODY; } } @Override public int doEndTag() throws JspException { // TODO Auto-generated method stub return super.doEndTag(); } }