js＋jsp标签实现页面级联菜单

package tag.word; import javax.servlet.jsp.JspException; import javax.servlet.jsp.JspWriter; import javax.servlet.jsp.tagext.BodyTagSupport; import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; import org.apache.taglibs.standard.lang.support.ExpressionEvaluatorManager; public class StringTag extends BodyTagSupport { private static final long serialVersionUID = 1L; private String inputName = ""; private String inputId=""; private String value = ""; private Log logger= LogFactory.getLog(this.getClass()); private String str=""; public StringTag() { } public String getiInputName() { return inputName; } public void setInputName(String inputName) { this.inputName = inputName; } public String getiInputId() { return inputId; } public void setInputId(String inputId) { this.inputId = inputId; } public int doStartTag() throws JspException { JspWriter out = pageContext.getOut(); if(value.equals("country")) str="\"0-中国-01|0-日本-02|01-北京-001|01-辽宁-002|02-东京-021|001-东城区-0010|001-西城区-0011|002-沈阳-0021|021-西城区-0211\""; else str="\"0-辽宁-01|0-吉林-02|01-沈阳-001|01-大连-002|02-长春-021|001-东陵区-0010|001-和平区-0011|002-甘井子区-0021|021-铁西区-0211\""; str="<input type=\"hidden\" id = "+inputId+" name="+inputName+ " value="+str+">"; System.out.println(str); try{ out.println(str); }catch(Exception e){ e.printStackTrace(); } return SKIP_BODY; }//doStartTag public String getvalue() { return value; } public void setValue(String value) { try { this.value = (String) ExpressionEvaluatorManager.evaluate("defaultvalue", value,Object.class, this, pageContext); System.out.println("value="+value); } catch (JspException e) { if(logger.isErrorEnabled()){ logger.error("生成字典下拉列表出错："+e.getMessage()); } } } }