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Velocity模版加载(classpath、webapp)
classpath资源路径加载:
velocity.properties文件配置
file.resource.loader.class = org.apache.velocity.runtime.resource.loader.ClasspathResourceLoader input.encoding = UTF-8 output.encoding = UTF-8Servlet代码
/** * cn.jbit.servlet.ListServlet * 2014-5-8 * gyy */ package cn.jbit.servlet; import java.io.IOException; import java.io.InputStream; import java.util.ArrayList; import java.util.List; import java.util.Properties; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import org.apache.velocity.Template; import org.apache.velocity.app.VelocityEngine; import org.apache.velocity.context.Context; import org.apache.velocity.tools.view.VelocityViewServlet; import cn.jbit.entity.Order; public class ListServlet extends VelocityViewServlet { private static final long serialVersionUID = -2874204863438528905L; @Override protected Template handleRequest(HttpServletRequest request, HttpServletResponse response, Context ctx) { List<Order> orders = new ArrayList<Order>(); Order order = new Order(); order.setItem("Iphone4"); order.setType("智能手机"); order.setPrice("5900"); orders.add(order); order = new Order(); order.setItem("PSP3003"); order.setType("多媒体产品"); order.setPrice("1750"); orders.add(order); order = new Order(); order.setItem("Kinest"); order.setType("体感器"); order.setPrice("1150"); orders.add(order); // 初始化Velocity引擎 VelocityEngine ve = new VelocityEngine(); InputStream is = this.getClass().getResourceAsStream("/velocity.properties"); Properties properties = new Properties(); try { properties.load(is); } catch (IOException e) { e.printStackTrace(); } ve.init(properties); Template template = ve.getTemplate("list.vm"); // 为模版中的元素赋值 ctx.put("orders", orders); return template; } }velocity模版文件
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>Velocity模版</title> </head> <body> 您好,亲爱的顾客,您的订单是: <table> <tr> <th>物品</th> <th>各类</th> <th>价格</th> </tr> #foreach($order in $orders) <tr> <td>$order.item</td> <td>$order.type</td> <td>$order.getPrice()</td> </tr> #end </table> </body> </html>显示结果
webapp加载:
velocity.properties文件配置
resource.loader = webapp webapp.resource.loader.class = org.apache.velocity.tools.view.servlet.WebappLoader webapp.resource.loader.path = /WEB-INF/vm/ input.encoding = UTF-8 output.encoding = UTF-8Servlet代码
/** * cn.jbit.servlet.ListServlet * 2014-5-8 * gyy */ package cn.jbit.servlet; import java.util.ArrayList; import java.util.List; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import org.apache.velocity.Template; import org.apache.velocity.context.Context; import org.apache.velocity.tools.view.VelocityViewServlet; import cn.jbit.entity.Order; public class ListServlet extends VelocityViewServlet { private static final long serialVersionUID = -2874204863438528905L; @Override protected Template handleRequest(HttpServletRequest request, HttpServletResponse response, Context ctx) { List<Order> orders = new ArrayList<Order>(); Order order = new Order(); order.setItem("Iphone4"); order.setType("智能手机"); order.setPrice("5900"); orders.add(order); order = new Order(); order.setItem("PSP3003"); order.setType("多媒体产品"); order.setPrice("1750"); orders.add(order); order = new Order(); order.setItem("Kinest"); order.setType("体感器"); order.setPrice("1150"); orders.add(order); // 为模版中的元素赋值 ctx.put("orders", orders); return getTemplate("list.vm"); } }
web.xml部署文件配置
好了,结束了,希望对大家有用吧。
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