yanhua365’s gists

yanhua365 / XmlResponseController.java

Last active December 28, 2015 09:29

Spring MVC 3.1 的RequestMapping注解里增加了produces属性，可以明确指定返回响应的格式为特定的格式，比如XML格式。

	@RequestMapping(value = "/only-xml-response", method = RequestMethod.GET, produces = MediaType.APPLICATION_XML_VALUE)
	@ResponseBody
	public Object onlyXml(ModelMap modelMap){
	//BookDTO 是增加了JAXB注解的一个JavaBean
	BookDTO b = new BookDTO("Java in Action");
	return b;
	//也可以返回字符串
	//return "<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"yes\"?><book><name>java in action.</name></book>";
	}

yanhua365 / XmlResponseController.groovy

Last active December 28, 2015 09:29

返回XML响应的Spring Boot CLI脚本。

	package org.test

	@Grab("spring-boot-starter-actuator")

	@RestController
	public class XmlResponseController {

	@RequestMapping(value="/xml", method = RequestMethod.GET,produces = MediaType.APPLICATION_XML_VALUE)
	public def hello() {
	//实际应用的时候可以用MarkupBuilder来构造

yanhua365 / DownloadController.java

Last active December 28, 2015 23:09

Spring MVC 提供文件下载的控制器

	@RequestMapping(value = "/download/{filename:.+}", method = RequestMethod.GET)
	public void download(@PathVariable("filename") String filename,HttpServletRequest request ,HttpServletResponse response){
	try {
	File file=new File(request.getSession().getServletContext().getRealPath("/download/"+filename));
	response.setCharacterEncoding("utf-8");
	response.setContentType("multipart/form-data");
	response.setHeader("Content-Disposition", "attachment;filename="+ filename);
	response.setHeader("Content-Length", "" + file.length());
	//System.out.println(file.getAbsolutePath());

yanhua365 / JavaBeanEqualsBaseOnNotNullFields.java

Created November 25, 2013 08:05

用IntelliJ IDEA生成的equals和hashCode方法

	@Override
	public boolean equals(Object o) {
	if (this == o) return true;
	if (o == null \|\| getClass() != o.getClass()) return false;

	UpdateConfig that = (UpdateConfig) o;

	if (!fromVersion.equals(that.fromVersion)) return false;
	if (!targetVersion.equals(that.targetVersion)) return false;

yanhua365 / JavaBeanEqualsByGuava.java

Created November 25, 2013 08:19

用Guava简化equals，hashCode和toString的编写。

	@Override
	public boolean equals(Object o) {
	if (this == o) return true;
	if (o == null \|\| getClass() != o.getClass()) return false;

	UpdateConfig that = (UpdateConfig) o;

	return Objects.equal(fromVersion, that.fromVersion)
	&& Objects.equal(targetVersion, that.targetVersion);
	}

yanhua365 / git-completion.bash

Last active December 29, 2015 09:39

新安装Git后，配置中文编码以及用户名和电子邮件等信息

	#在%GIT_HOME%\etc\git-completion.bash 这个文件中添加
	alias ls='ls --show-control-chars --color=auto'

yanhua365 / gist:7652058

Created November 26, 2013 01:34

新建Git项目并push到对应的oschina的仓库中

	mkdir myprj
	cd myprj
	git init
	touch README.md
	git add README.md
	git commit -m "first commit"
	git remote add origin https://git.oschina.net/yourname/myprj.git
	git push -u origin master

yanhua365 / gist:7652773

Created November 26, 2013 02:52

用Guava实现一行代码从classpath中读取文件内容

String json = Resources.toString(Resources.getResource("com/mycompany/test/fixture/config_fixture.json"), Charsets.UTF_8);

yanhua365 / spring-jpa-datasource-h2.xml

Created November 26, 2013 07:52

Spring JPA中的各种数据库连接配置

	<!-- H2的混合模式 -->
	<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">
	<property name="driverClassName" value="org.h2.Driver" />
	<!--<property name="url" value="jdbc:h2:~/databases/mydb" />-->
	<property name="url" value="jdbc:h2:file://D:\h2\mydb;AUTO_SERVER=TRUE;USER=SA;" />
	</bean>


	<!-- H2的内存模式 -->
	<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">

yanhua365 / config_edit.ftl

Last active December 29, 2015 15:19

Freemarker和Bootstrap结合高亮显示单个输入验证错误的消息

	<#--
	* 结合bootstrap的样式，有错误的时候高亮显示字段
	* config是表单绑定的模型对象，targetVersion是它的一个属性
	-->
	<@spring.bind "config.targetVersion"/>
	<#assign error>
	<#if spring.status.errorMessages?has_content>error</#if>
	</#assign>
	<div class="control-group ${error}">
	<label class="control-label" for="inputTargetVersion">升级后版本</label>

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