搭建环境：
1.创建一个web项目,下载以下jar包
commons-logging-1.1.1.jar: (dwr依赖于该jar)
dwr.jar
mysql-connector-java-5.1.6-bin.jar
web.xml中配置dwr拦截器
<servlet> <servlet-name>dwr-invoker</servlet-name> <servlet-class>uk.ltd.getahead.dwr.DWRServlet</servlet-class> <init-param> <param-name>debug</param-name> <param-value>true</param-value> </init-param> </servlet> <servlet-mapping> <servlet-name>dwr-invoker</servlet-name> <url-pattern>/dwr/*</url-pattern> </servlet-mapping>
2.在WEB-INF下,配置dwr.xml(从dwr的提供的压缩包中找出该文件.)
<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE dwr PUBLIC "-//GetAhead Limited//DTD Direct Web Remoting 3.0//EN" "http://getahead.org/dwr/dwr30.dtd"> <dwr> <init> <creator id="none" class="org.directwebremoting.create.NullCreator"/> <creator id="new" class="org.directwebremoting.create.NewCreator"/> <creator id="static" class="org.directwebremoting.create.StaticCreator"/> <creator id="pageflow" class="org.directwebremoting.beehive.PageFlowCreator"/> <creator id="spring" class="org.directwebremoting.spring.SpringCreator"/> <creator id="script" class="org.directwebremoting.create.ScriptedCreator"/> <creator id="struts" class="org.directwebremoting.struts.StrutsCreator"/> <!-- These are now in the noncla module <creator id="jsf" class="org.directwebremoting.faces.JsfCreator"/> <creator id="jsf2" class="org.directwebremoting.faces.Jsf2Creator"/> <creator id="ejb3" class="org.directwebremoting.create.Ejb3Creator"/> --> <converter id="null" class="org.directwebremoting.convert.NullConverter"/> <converter id="enum" class="org.directwebremoting.convert.EnumConverter"/> <converter id="primitive" class="org.directwebremoting.convert.PrimitiveConverter"/> <converter id="bignumber" class="org.directwebremoting.convert.BigNumberConverter"/> <converter id="string" class="org.directwebremoting.convert.StringConverter"/> <converter id="array" class="org.directwebremoting.convert.ArrayConverter"/> <converter id="map" class="org.directwebremoting.convert.MapConverter"/> <converter id="collection" class="org.directwebremoting.convert.CollectionConverter"/> <converter id="date" class="org.directwebremoting.convert.DateConverter"/> <converter id="jodaLocalDateTime" class="org.directwebremoting.convert.LocalDateTimeConverter"/> <converter id="dom" class="org.directwebremoting.convert.DOMConverter"/> <converter id="dom4j" class="org.directwebremoting.convert.DOM4JConverter"/> <converter id="jdom" class="org.directwebremoting.convert.JDOMConverter"/> <converter id="xom" class="org.directwebremoting.convert.XOMConverter"/> <converter id="servlet" class="org.directwebremoting.convert.ServletConverter"/> <converter id="bean" class="org.directwebremoting.convert.BeanConverter"/> <converter id="object" class="org.directwebremoting.convert.ObjectConverter"/> <converter id="hibernate2" class="org.directwebremoting.hibernate.H2BeanConverter"/> <converter id="hibernate3" class="org.directwebremoting.hibernate.H3BeanConverter"/> <converter id="url" class="org.directwebremoting.convert.URLConverter"/> <converter id="exception" class="org.directwebremoting.convert.ExceptionConverter"/> <converter id="miniException" class="org.directwebremoting.convert.MinimalistExceptionConverter"/> <converter id="file" class="org.directwebremoting.convert.FileConverter"/> <converter id="context" class="org.directwebremoting.convert.ContextConverter"/> <converter id="stringWrapper" class="org.directwebremoting.convert.StringWrapperConverter"/> <converter id="raw" class="org.directwebremoting.convert.RawConverter"/> <converter id="proxyFunction" class="org.directwebremoting.convert.JavascriptFunctionConverter"/> <converter id="proxyObject" class="org.directwebremoting.convert.JavascriptObjectConverter"/> <converter id="proxyInterface" class="org.directwebremoting.convert.ProxyInterfaceConverter"/> <converter id="locale" class="org.directwebremoting.convert.LocaleConverter"/> <converter id="currency" class="org.directwebremoting.convert.CurrencyConverter"/> <converter id="jsx3uri" class="jsx3.net.URIResolverConverter"/> <converter id="jsx3doc" class="jsx3.xml.CdfDocumentConverter"/> </init> <allow> <convert converter="null" match="void"/> <convert converter="null" match="java.lang.Void"/> <convert converter="miniException" match="java.lang.Throwable"/> <convert converter="primitive" match="boolean"/> <convert converter="primitive" match="byte"/> <convert converter="primitive" match="short"/> <convert converter="primitive" match="int"/> <convert converter="primitive" match="long"/> <convert converter="primitive" match="float"/> <convert converter="primitive" match="double"/> <convert converter="primitive" match="char"/> <convert converter="primitive" match="java.lang.Boolean"/> <convert converter="primitive" match="java.lang.Byte"/> <convert converter="primitive" match="java.lang.Short"/> <convert converter="primitive" match="java.lang.Integer"/> <convert converter="primitive" match="java.lang.Long"/> <convert converter="primitive" match="java.lang.Float"/> <convert converter="primitive" match="java.lang.Double"/> <convert converter="primitive" match="java.lang.Character"/> <convert converter="bignumber" match="java.math.BigInteger"/> <convert converter="bignumber" match="java.math.BigDecimal"/> <convert converter="string" match="java.lang.String"/> <convert converter="date" match="java.util.Date"/> <convert converter="date" match="java.sql.Date"/> <convert converter="date" match="java.sql.Time"/> <convert converter="date" match="java.sql.Timestamp"/> <convert converter="date" match="java.util.Calendar"/> <convert converter="url" match="java.net.URL"/> <convert converter="locale" match="java.util.Locale"/> <convert converter="currency" match="java.util.Currency"/> <convert converter="array" match="[Z"/> <convert converter="file" match="[B"/> <convert converter="array" match="[S"/> <convert converter="array" match="[I"/> <convert converter="array" match="[J"/> <convert converter="array" match="[F"/> <convert converter="array" match="[D"/> <convert converter="array" match="[C"/> <convert converter="array" match="[L*"/> <!-- The catch for the next 2 is that we really mean java.util.Collection<String> and java.util.Map<String, String> but we need to do more work before this syntax is enabled --> <convert converter="collection" match="java.util.Collection"/> <convert converter="map" match="java.util.Map"/> <convert converter="dom" match="org.w3c.dom.Node"/> <convert converter="dom" match="org.w3c.dom.Element"/> <convert converter="dom" match="org.w3c.dom.Document"/> <convert converter="dom4j" match="org.dom4j.Document"/> <convert converter="dom4j" match="org.dom4j.Element"/> <convert converter="dom4j" match="org.dom4j.Node"/> <convert converter="jdom" match="org.jdom.Document"/> <convert converter="jdom" match="org.jdom.Element"/> <convert converter="xom" match="nu.xom.Document"/> <convert converter="xom" match="nu.xom.Element"/> <convert converter="xom" match="nu.xom.Node"/> <convert converter="servlet" match="javax.servlet.ServletConfig"/> <convert converter="servlet" match="javax.servlet.ServletContext"/> <convert converter="servlet" match="javax.servlet.http.HttpServletRequest"/> <convert converter="servlet" match="javax.servlet.http.HttpServletResponse"/> <convert converter="servlet" match="javax.servlet.http.HttpSession"/> <convert converter="file" match="java.io.InputStream"/> <convert converter="file" match="java.awt.image.BufferedImage"/> <convert converter="jsx3uri" match="jsx3.net.URIResolver"/> <convert converter="jsx3doc" match="jsx3.xml.CdfDocument"/> <convert converter="exception" match="org.directwebremoting.io.DwrConvertedException"/> <convert converter="file" match="org.directwebremoting.io.FileTransfer"/> <convert converter="bean" match="org.directwebremoting.io.Item"/> <convert converter="bean" match="org.directwebremoting.io.ItemUpdate"> <param name="constructor" value="String itemId, String attribute, org.directwebremoting.io.RawData newValue"/> </convert> <convert converter="bean" match="org.directwebremoting.io.MatchedItems"/> <convert converter="proxyFunction" match="org.directwebremoting.io.JavascriptFunction"/> <convert converter="proxyObject" match="org.directwebremoting.io.JavascriptObject"/> <convert converter="raw" match="org.directwebremoting.io.RawData"/> <convert converter="bean" match="org.directwebremoting.io.QueryOptions"> <param name="constructor" value="boolean deep, boolean ignoreCase" /> </convert> <convert converter="bean" match="org.directwebremoting.io.StoreRegion"> <param name="constructor" value="int start, int count, java.util.List sort, java.util.Map query, org.directwebremoting.io.QueryOptions queryOptions"/> </convert> <convert converter="proxyInterface" match="org.directwebremoting.io.StoreChangeListener"/> <convert converter="null" match="org.directwebremoting.datasync.StoreProvider"/> <convert converter="bean" match="org.directwebremoting.jsonrpc.io.JsonRpcError"/> <convert converter="bean" match="org.directwebremoting.jsonrpc.io.JsonRpcResponse"/> <convert converter="bean" match="org.directwebremoting.io.SortCriterion"> <param name="constructor" value="String attribute, boolean descending"/> </convert> <convert converter="stringWrapper" match="org.directwebremoting.io.StringWrapper"/> <!-- <convert converter="context" match="org.directwebremoting.io.Context"/> <convert converter="bean" match="java.lang.StackTraceElement" /> <convert converter="exception" match="java.lang.Exception"/> -->
<!— 以上信息不用改—>
<create creator="new" javascript="grantService"> <param name="class" value="com.dwrtest.service.GrantForCompany" /> </create> <!--配置实体类存放路径用于传递对象时使用--> <convert match="com.dwrtest.entity.*" converter="bean"></convert> </allow> </dwr>
3. 创建企业实体
import java.sql.Date; public class Company { private int companyId;//企业id private String companyName;//企业名 private String domain;//域名 private int maxDomain;//最大域名数 private int maxUsers;//最大用户数 private String ipAdd; //授权ip地址 private String macAdd; //授权mac地址 private Date startServiceDate; //服务开始日期 private Date endServiceDate; //服务结束日期 private String publicEmlpath; //系统公共邮件保存路径 private String dataSavePath;//数据存储路径 private String dataBackup;//数据备份路径 private String logSavePath;//日志存储路径 public Company(){ } //set,get方法 }
4. 编写测试类
mport java.sql.Connection; import java.sql.Date; import java.sql.PreparedStatement; import java.sql.ResultSet; import java.sql.Statement; import java.sql.Timestamp; import org.apache.log4j.Logger; import com.espeed.dao.impl.InitDao; import com.espeed.entity.Company; import com.espeed.entity.ModuleCompanyBox; import com.espeed.entity.ModuleCustomerManager; import com.espeed.entity.ModuleEmailMarkit; import com.espeed.util.DBUtils; import com.espeed.util.DES_Encrypt; import com.espeed.util.Md5Code; public class GrantForCompany { private InitDao dao = null; private Logger log = Logger.getLogger(GrantForCompany.class); private Connection conn; private ResultSet rs; private PreparedStatement pst; //前端调用该方法 public String test(Company company) { return company.getCompanyName(); } }
5.编写jsp页面及js
jsp页面中,引入以下：
<!--引入以下三个js,这些路径是隐含存在的,你不需要手动去找,前提是你已经导入dwr包—>
<script type='text/javascript' src='${pageContext.request.contextPath}/dwr/engine.js'></script>
<script type='text/javascript' src='${pageContext.request.contextPath}/dwr/util.js'></script>
<script type='text/javascript' src='${pageContext.request.contextPath}/dwr/interface/grantService.js'></script>
<!--引入js,jquery—>
<script type="text/javascript" src="js/jquery-1.4.2.js"></script>
<script type="text/javascript" src="js/index.js"></script>
测试 <input type="button" value="确认" onclick="getCompanyName()">
index.js中调用java方法:
function getCompanyName() { var companyObj= new Object(); companyObj.companyName='华为中兴"; //companyName对应java企业实体中的属性. //grantService对应于dwr.xml配置 grantService.test(companyObj,function(msg) { alert("返回数据："+msg); }); }
允许项目得到后台test方法返回的结果.