tts8.0課件課后練習(xí)代碼面試-經(jīng)典案例

JavaSERVLET&JSP級聯(lián)下拉列使用JSON完成級聯(lián)下拉列熱賣商品動態(tài)顯jQuery演select選擇<%@pagecontentType="text/html;charset=utf-<title>Inserttitle<script<scriptfunctionvarxhr=XMLHttpRequest)!='undefined'){xhr}elsexhr=new return functionvarxhr=//服務(wù)器返回yy,岳陽;cs,長沙;hh,if(xhr.readyState==vartxt=vararr=$('s2').innerHTML=vararr1=vararr2=varop=new$('s2').options[i]=}}xhr.send('name='+}<bodystyle="font-<selectid="s1"<optionvalue="hn"><option <selectid="s2"packageimportimportimportimportimportimport publicclassActionServletextends{publicvoidservice(HttpServletRequestHttpServletResponsethrowsServletException,IOExceptionStringuri=Stringpath=PrintWriterout=Stringname=}else}}}}packagepublicclassOptionprivateStringcityName;privateStringcityValue;publicStringgetCityName(){returnthis.cityName=publicvoidsetCityName(StringcityName){this.cityName=publicStringgetCityValue(){returnpublicvoidsetCityValue(StringcityValue){this.cityValue=publicOption()publicOption(StringcityName,StringcityValue)

如何將一個java對象(包括java對象數(shù)組、集合)轉(zhuǎn)換成一個json字符thisthis.cityValue=}}packageimportimportimportimportimportpublicclassTest*Java對象->JSONpublicstaticvoidOptionop=newOption(JSONObjectobj=Stringstr= *數(shù)組對象->JSONpublicstaticvoidOptionop=newOption(Optionop2=newOption("Optionop3=newOption("Option[]ops=JSONArrayobj=Stringstr=}*List對象->JSONpublicstaticvoidOptionop=newOption(Optionop2=newOption("Optionop3=newOption("List<Option>ops=newJSONArrayobj=Stringstr= publicstaticvoidmain(String[]args)}}如何將一個json字符串轉(zhuǎn)換成js對<metahttp-equiv="Content-Type"content="text/html;charset=UTF-8"><title>Inserttitle<script<scriptfunctionvarstr="{'name':'zs','age':22}";varobj=str.evalJSON();}functionvarstr=varobjs=}<bodystyle="font-<ahref="javascript:;"使用JSON實(shí)現(xiàn)級聯(lián)下拉列packageimportimportimportimportimportjavax.servlet.ServletException;importjavax.servlet.http.HttpServlet;importjavax.servlet.http.HttpServletRequest;importimport import publicclassActionServletextends{publicvoidservice(HttpServletRequestHttpServletResponsethrowsServletException,IOExceptionStringuri=Stringpath=PrintWriterout=Stringname=}else }elseStringname=Optionop=newOption(Optionop2=newOption("Optionop3=newOption("List<Option>ops=newJSONArrayobj=Stringstr=}elseOptionop=newOption(Optionop2=newOption("Optionop3=newOption("List<Option>ops=newJSONArrayobj=JSONArray.fromObject(ops);Stringstr=obj.toString();}}}}<%@pagecontentType="text/html;charset=utf-<title>Inserttitle<scripttype="text/javascript"src="js/prototype-<scripttype="text/javascript">getXmlHttpRequest(){varxhr=null;XMLHttpRequest)!='undefined'){xhrnew新建 return functionvarxhr=if(xhr.readyState==vartxt=varcitys=$('s2').innerHTML=varopnew$('s2').options[i]= xhr.send('name='+ <bodystyle="font-<selectid="s1"<optionvalue="hn"><option <selectid="s2"擴(kuò)展知packageimportpublicclass{privateStringname;privateDatebirthday;publicDategetBirthday(){return}publicvoidsetBirthday(Date{this.birthday=}publicString{return}publicvoidsetName(String{=}}新建packageimportimportnet.sf.json.JSONObject;importbean.User;publicclassTest2publicstaticvoidtest1(){Useruser=newUser();user.setName("zs");user.setBirthday(newDate());JSONObjectobj=Stringstr=}publicstaticvoidmain(String[]args){}//TODOAuto-generatedmethod}日期運(yùn)行結(jié)果處新建packageimportimportimportimport**比如將日期轉(zhuǎn)換成"2011-12-7"*@author*publicclassDateProcessorimplementsprivateStringpattern="yyyy-MM-dd";publicvoidsetPattern(Stringpattern)this.pattern= publicObjectprocessArrayValue(ObjectJsonConfigarg1)SimpleDateFormatsdf=newreturn publicObjectprocessObjectValue(StringObjectarg1,JsonConfigarg2)SimpleDateFormatsdf=newreturn 修改packageimportimportimportimport//TODOAuto-} publicclassTest2publicstaticvoidtest1(){Useruser=newUser();user.setName("zs");user.setBirthday(newDate());JsonConfigconfig=newJsonConfig();Date.class,newDateProcessor());JSONObjectobj=Stringstr=obj.toString();}publicstaticvoidmain(String[]args)修改packageimportimportjava.io.PrintWriter;importjava.util.Date;importimportimportimportimportimportimportimportpublicclassActionServletextends{publicvoidservice(HttpServletRequestHttpServletResponsethrowsServletException,IOExceptionStringuri=Stringpath=PrintWriterout=Useruser=newuser.setBirthday(newJsonConfigconfig=newDate.class,newJSONObjectobjStringstr=}}}新建<%@pagecontentType="text/html;charset=utf-<title>Inserttitle<scripttype="text/javascript"src="js/prototype-<scriptfunctionvarxhr=if((typeofxhr=new}elsexhr=newActiveXObject('}return}functionvarxhr=if(xhr.readyState==vartxt=varobj=$('d1').innerHTML=++'birthay:'+}}<bodystyle="font-<ahref="javascript:;"onclick="f1();">用戶描述<div 2.32.4packageimportpublicclass{privateStringname;privateDatebirthday;publicDategetBirthday(){return}publicvoidsetBirthday(Date{this.birthday=}publicString{return}publicvoidsetName(String{=}}packageimportimportnet.sf.json.JSONObject;importbean.User;publicclassTest2publicstaticvoidtest1(){Useruser=newUser();user.setName("zs");user.setBirthday(newDate());JSONObjectobj=Stringstr=}//TODOAuto-generatedmethodpublicstaticvoidmain(String[]args){}}新建packageimportimportimportimport**比如將日期轉(zhuǎn)換成"2011-12-7"*@author*publicclassDateProcessorimplementsprivateStringpattern="yyyy-MM-dd";publicvoidsetPattern(Stringpattern)this.pattern= publicObjectprocessArrayValue(ObjectJsonConfigarg1)SimpleDateFormatsdf=newreturn publicObjectprocessObjectValue(StringObjectarg1,JsonConfigarg2)SimpleDateFormatsdf=newreturn 修改packageimportimport

importnet.sf.json.JsonConfig;importbean.User;publicclassTest2{publicstaticvoidtest1(){Useruser=newUser();user.setName("zs");user.setBirthday(newDate());JsonConfigconfig=newJsonConfig();Date.class,newDateProcessor());JSONObjectobj=Stringstr=obj.toString();}publicstaticvoidmain(String[]args)//TODOAuto-} 修改packageimportimportjava.io.PrintWriter;importjava.util.Date;importimportimportimportimportimportimportimportpublicclassActionServletextends{publicvoidservice(HttpServletRequestHttpServletResponsethrowsServletException,IOExceptionStringuri=Stringpath=PrintWriterout=Useruser=newuser.setBirthday(newJsonConfigconfig=newDate.class,newJSONObjectobjStringstr=}}}新建<%@pagecontentType="text/html;charset=utf-<title>Inserttitle<scripttype="text/javascript"src="js/prototype-<scriptfunctionvarxhr=if((typeofxhr=new}elsexhr=new return functionvarxhr=if(xhr.readyState==vartxt=varobj=$('d1').innerHTML= ++'birthay:'+ <bodystyle="font-<ahref="javascript:;"onclick="f1();"><divSQL>createtableidbigintprimarykeyauto_increment,prodNamevarchar(50),qtyint);SQL>insertintoSQL>Sale寫dao類SaleDAO，提供一個獲得銷量前三名的方法。參考sql:select*fromt_saleorderbyqtydesclimit3;function}function//使用ajax，，獲}<body新建工程導(dǎo)入JarJSON&&mysql數(shù)據(jù)準(zhǔn)droptablecreatetableidbigintprimarykeyauto_increment,prodNamevarchar(50),qtyint);insertintot_sale(prodName,qty)insertintot_sale(prodName,qty)values(insertintot_sale(prodName,qty)values(insertintot_sale(prodName,qty)values(SQL>select*fromt_saleorderbyqtydesclimit實(shí)體新建packagepublicclassSaleprivateStringname;privateintqty;publicSale(Stringname,int{super();=name;this.qty=}publicSale(){super();}publicStringgetName(){returnpublicvoidsetName(Stringname){=name;}publicintgetQty(){returnqty;}publicvoidsetQty(intqty){this.qty=}packageimportimportimportimportimportimport importpublicclassSaleDAOpublicList<Sale>find()throwsList<Sale>salesnewConnectionconn=StatementstatResultSetrst"select*fromt_saleorderbyqtydesclimitSales=new}return }測試（略新建packageclassActionServletextends{publicvoidservice(HttpServletRequestHttpServletResponsethrowsServletException,IOExceptionStringuri=Stringpath=PrintWriterout=System.out.println("getSaleDAOdao=newtryList<Sale>sales=JSONArrayarry=}catch(Exceptione)thrownew}} <%@pagecontentType="text/html;charset=utf-<title>Inserttitlebackground-border:1pxsolidmargin-margin- <scripttype="text/javascript"src="js/prototype-<scriptfunctionvarxhr=if((typeofxhr=new}elsexhr=new return function functionvarxhr=if(xhr.readyState==vartxt=varsales=varsaleInfo'當(dāng)前銷量最好的商品是saleInfo+=+sales[i].name+'銷量:'++}$('d1').innerHTML=}}<bodystyle="font-<diva.5新建工程使用新建<metahttp-equiv="Content-Type"content="text/html;charset=UTF-<title>Inserttitlebackground- font- <scripttype="text/javascript"src="js/jquery-//演示functionvarobj //演示functionf2(){varobj=$('#a1');//alert(obj.innerHTML);}<bodystyle="font-<aid="a1"o模擬實(shí)現(xiàn)修改<metahttp-equiv="Content-Type"content="text/html;charset=UTF-<title>Inserttitle<scripttype="text/javascript"src="js/jquery-//演示//3.1模擬jqueryfunctionvarobjreturnnew //3.2functionthis.obj=this.html=return //3.3functionvarobj= <bodystyle="font-<aid="a1"href="javascript:;" o利用jQuery更改樣修改<metahttp-equiv="Content-Type"content="text/html;charset=UTF-