- 上一篇：JSP技术发展史英文文献和中文翻译
- 下一篇：塑料注塑模具的冷却通道设计英文文献和中文翻译
JavaScript will complement each other, but they are different, so the technology of the many dismissed the misunderstanding of the two technologies.JavaScript to create user interface control provides a scripting language. In fact, in the browser into the JavaScript code logic. It can support such effect: when the cursor on the Web page of a mobile user input validation or transform image.Microsoft also write out their JavaScript version and the JScript called. Microsoft and Netscape support JavaScript and JScript around a core characteristics and European Manufacturers is.md by (ECMA) standards organization, the control standard of scripting language. ECMA its scripting language ECMAScript named.Servlets and JSPs often include fragments of information that are common to an organization, such as logos, copyrights, trademarks, or navigation bars. The web application uses the include mechanisms to import the information wherever it is needed, since it is easier to change content in one place then to maintain it in every piece of code where it is used. Some of this information is static and either never or rarely changes, such as an organization's logo. In other cases, the information is more dynamic and changes often and unpredictably, such as a textual greeting that must be localized for each user. In both cases, you want to ensure that the servlet or JSP can evolve independently of its included content, and that the implementation of the servlet or JSP properly updates its included content as necessary.You want to include a resource that does not change very much (such as a page fragment that represents a header or footer) in a JSP. Use the include directive in the including JSP page, and give the included JSP segment a .jspf extension.You want to include content in a JSP each time it receives a request, rather than when the JSP is converted to a servlet. Use the jsp:include standard action. You want to include a file dynamically in a JSP, based on a value derived from a configuration file. Use the jsp:include standard action. Provide the value in an external properties file or as a configuration parameter in the deployment descriptor.You want to include a fragment of an XML file inside of a JSP document, or include a JSP page in XML syntax. Use the jsp:include standard action for the includes that you want to occur with each request of the JSP. Use the jsp:directive.include element if the include action should occur during the translation phase.You want to include a JSP segment from outside the including file's context. Use the c:import.The operation principle and the advantages of JSP tags In this section of the operating principle of simple introduction JSP and strengths. For the first time in a JSP documents requested by the engine, JSP Servlet is transformed into a document JSP. This engine is itself a Servlet. The operating process of the JSP shown below:(1) the JSP engine put the JSP files converting a Java source files (Servlet), if you find the files have any grammar mistake JSP, conversion process will interrupt, and to the server and client output error messages.(2) if converted, with the engine JSP javac Java source file compiler into a corresponding scale-up files.(3) to create a the Servlet (JSP page), the transformation of the Servlet jspInit () method was executed, jspInit () method in the life cycle of Servlet executed only once.(4) jspService () method invocation to the client requests. For each request, JSP engine to create a new thread for processing the request. If you have multiple clients and request the JSP files, JSP engine will create multiple threads. Each client requests a thread. To execute multi-thread can greatly reduce the requirement of system resources, improving the concurrency value and response time. But also should notice the multi-thread programming, due to the limited Servlet always in response to memory, so is very fast.(5) if the file has been modified. The JSP, server will be set according to the document to decide whether to recompile,if need to recompile, will replace the Servlet compile the memory and continue the process.
-
数控加工技术英文文献和中文翻译
-
CAD/CAM模具技术课程教学改...
-
JSP英文文献和中文翻译
-
Java技术的Web应用设计模型...
-
JSP技术简介及特点英文文献和中文翻译
-
JSP技术概述英文文献和中文翻译
-
Servlet和JSP技术概述英文文献和中文翻译
酸性水汽提装置总汽提塔设计+CAD图纸
大众媒体对公共政策制定的影响
当代大学生慈善意识研究+文献综述
中考体育项目与体育教学合理结合的研究
java+mysql车辆管理系统的设计+源代码
十二层带中心支撑钢结构...
乳业同业并购式全产业链...
杂拟谷盗体内共生菌沃尔...
电站锅炉暖风器设计任务书
河岸冲刷和泥沙淤积的监测国内外研究现状