I have a Spring MVC project and I have configured the jackson library to automatically transform the response (java object) to a json and it works in GET requests as following. @RequestMapping(method = RequestMethod.GET) public @ResponseBody Orders createOrder(Model model){ Orders orders = new Orders(); //Populate orders..... return orders; } But when a I try t
我有一个Spring MVC项目，我已经配置了jackson库来自动将响应（java对象）转换为json，并且它在GET请求中工作如下。 @RequestMapping(method = RequestMethod.GET) public @ResponseBody Orders createOrder(Model model){ Orders orders = new Orders(); //Populate orders..... return orders; } 但是当我尝试处理POST请求并从json的请求中获取对象时，我得到错误“400 Bad Request”，因为
I've implemented a RESTful web service with Spring. The service responds in XML or JSON based on the Accept header. Here's the context.xml mapping: <bean id="xstreamMarshaller" class="org.springframework.oxm.xstream.XStreamMarshaller"/> <bean id="xmlMessageConverter" class="org.springframework.http.converter.xml.MarshallingHttpMessageConverter"> <construc
我已经用Spring实现了一个RESTful Web服务。 该服务基于Accept头以XML或JSON响应。 这是context.xml映射： <bean id="xstreamMarshaller" class="org.springframework.oxm.xstream.XStreamMarshaller"/> <bean id="xmlMessageConverter" class="org.springframework.http.converter.xml.MarshallingHttpMessageConverter"> <constructor-arg ref="xstreamMarshaller"/> <property na
I understood, I think, that a "Bean" is a Java class with properties and getters/setters. As much as I understand, it is the equivalent of a C struct. Is that true? Also, is there a real syntactic difference between a bean and a regular class? Is there any special definition or an interface? Basically, why is there a term for this? Edit : If you can be so kind and add informati
我明白，我认为，“Bean”是一个具有属性和getter / setter的Java类。 据我所知，它相当于一个C结构。 真的吗？ 另外，bean和普通类之间是否存在真正的语法差异？ 有没有特殊的定义或界面？ 基本上，为什么会有这样的术语？ 编辑 ：如果你可以如此善良并添加有关Serializable接口的信息，以及它的含义，对于你的回答，我会非常感激。 JavaBean只是一个标准 所有属性私有（使用getters / setters） 公共无参数构造函
I have a poorly designed class in a 3rd-party JAR and I need to access one of its private fields. For example, why should I need to choose private field is it necessary? class IWasDesignedPoorly { private Hashtable stuffIWant; } IWasDesignedPoorly obj = ...; How can I use reflection to get the value of stuffIWant ? In order to access private fields, you need to get them from the class&#
我在第三方JAR设计得很差，我需要访问其中一个专用字段。 例如，为什么我需要选择私人领域是否有必要？ class IWasDesignedPoorly { private Hashtable stuffIWant; } IWasDesignedPoorly obj = ...; 我如何使用反射来获得stuffIWant的价值？ 为了访问私有字段，您需要从类的声明字段中获取它们，然后使其可访问： Field f = obj.getClass().getDeclaredField("stuffIWant"); //NoSuchFieldException f.setAccessible(
I have a Java String that contains XML, with no line feeds or indentations. I would like to turn it into a String with nicely formatted XML. How do I do this? String unformattedXml = "<tag><nested>hello</nested></tag>"; String formattedXml = new [UnknownClass]().format(unformattedXml); Note: My input is a String . My output is a String . Transformer transformer = Tra
我有一个包含XML的Java字符串，没有换行或缩进。 我想把它变成一个带有格式良好的XML的字符串。 我该怎么做呢？ String unformattedXml = "<tag><nested>hello</nested></tag>"; String formattedXml = new [UnknownClass]().format(unformattedXml); 注意：我的输入是一个字符串 。 我的输出是一个字符串 。 Transformer transformer = TransformerFactory.newInstance().newTransformer(); trans
I am trying to find out how to pass parameter while calling a velocity template from another. it looks like this File: _reading_tracker.vm #parse("student/shared/_bio_data.vm") I need to pass some arguments to the _bio_data.vm. Not sure how to do this Instead of parsing _bio_data.vm , try creating a macro, and then calling that macro from _reading_tracker.vm . Or, if you don't want
我试图找出如何从另一个调用速度模板时传递参数。 它看起来像这样 文件：_reading_tracker.vm #parse("student/shared/_bio_data.vm") 我需要将一些参数传递给_bio_data.vm。 不知道如何做到这一点 不要解析_bio_data.vm ，而应尝试创建一个宏，然后从_reading_tracker.vm调用该宏。 或者，如果您不想使用宏，那么您应该能够在外部模板中#set($var="value")任意数量的变量，并引用内部（已分析）模板中的这
I was just wondering how most people fetch a mime type from a file in Java? So far I've tried two utils: JMimeMagic & Mime-Util . The first gave me memory exceptions, the second doesn't close its streams off properly. I was just wondering if anyone else had a method/library that they used and worked correctly? 在Java 7中，您现在可以使用Files.probeContentType(path) 。 Unfortunate
我只是想知道大多数人如何从Java文件中获取MIME类型？ 到目前为止，我已经尝试了两个utils： JMimeMagic和Mime-Util 。 第一个给我的内存异常，第二个没有正确关闭它的流。 我只是想知道是否有其他人有他们使用和正确工作的方法/库？ 在Java 7中，您现在可以使用Files.probeContentType(path) 。 不幸， mimeType = file.toURL().openConnection().getContentType(); 不起作用，因为URL的这种使用使文件锁定，所以例如它
I need to write a String object "plain text" to a pdf file from a java program, does java or spring have any built-in libraries that can do the job.if not what are the best choice external libraries? I know I can use FileOutputStream to write data to a file but is there any option that can format the data in pdf and write it to the file, like .setContentType("application/pdf"
我需要从Java程序中将一个字符串对象“纯文本”写入一个pdf文件，java或spring是否有任何可以完成这项工作的内置库。如果不是最佳选择外部库？ 我知道我可以使用FileOutputStream把数据写入一个文件，但有可以在PDF格式的数据，并将其写入文件，就像任何选项.setContentType("application/pdf")中的HttpServletResponse 提前致谢 如果您需要编辑/更新PDF文档并且不想使用任何库，那么您将不得不自己实现PDF规范。
This question already has an answer here: How do I format a Microsoft JSON date? 37 answers This is the MS JSON date format. Use: var myDate = new Date(parseInt(String(dateString).substr(6))); String mDate = getFormattedDate(e.getString("JSON OBJECT")); private String getFormattedDate(String stringDate) throws JSONException { String strDate = stringDate.replace("/Date(", "").
这个问题在这里已经有了答案： 如何格式化Microsoft JSON日期？ 37个答案 这是MS JSON日期格式。 使用： var myDate = new Date(parseInt(String(dateString).substr(6))); String mDate = getFormattedDate(e.getString("JSON OBJECT")); private String getFormattedDate(String stringDate) throws JSONException { String strDate = stringDate.replace("/Date(", "").replace(")/", ""); strDate
What is the proper way of handling an orientation change in Android? When I researched this question there are two methods that came up. 1st Method Use the methods onSaveInstanceState(Bundle savedInstanceState) and onRestoreInstanceState(Bundle savedInstanceState) to store and restore your Activity after being killed by the Android OS after the orientation change. 2nd Method Added android:co
在Android中处理方向变化的正确方法是什么？ 当我研究这个问题时，有两种方法出现。 1st Method使用方法onSaveInstanceState(Bundle savedInstanceState)和onRestoreInstanceState(Bundle savedInstanceState)来存储和恢复您的Activity在Android OS被方向改变后onRestoreInstanceState(Bundle savedInstanceState)之后。 android:configChanges="orientation|keyboardHidden" 方法将 android:configChanges="