spring-mvc

问题 How can I register an ObjectIdResolver to an Spring/Jackson object mapper so that the ObjectIdResolver class gets instantiated by Spring? I would like to use dependency injection in my ObjectIdResolver class. ObjectIdResolver.java @Component public class UserIdResolver implements ObjectIdResolver { @Autowired UserConverter userConverter; @Override public void bindItem(ObjectIdGenerator.IdKey id, Object ob) { } @Override public Object resolveId(ObjectIdGenerator.IdKey id) { return

问题 I am back with working in Springs. I used to work in Springs but blindly, didn't understand much. I used to get a lot of errors, very basic ones, and I am getting them again. My problem is that, I don't know how the configuration of the Spring-MVC work. What happens when I run the project from my STS? I am working on the spring template project in STS. I am getting this when I run the project. WARN : org.springframework.web.servlet.PageNotFound - No mapping found for HTTP request with URI [

问题 I am trying to filter the collection using Thymeleaf by following the example in the following url. "Projection & selection on collection" section. http://doanduyhai.wordpress.com/2012/04/14/spring-mvc-part-iv-thymeleaf-advanced-usage/ <tr th:each="artist,rowStat : ${listArtits.?[alive == true]}"> ... </tr> However I would like to use another property instead of fixed value (true/false). For example <tr th:each="artist,rowStat : ${listArtits.?[played > playedCountReq]}"> ... </tr> where as

问题 I wanted to fetch the List of Entities from database at Front end. So I have written POST REST HTTP call in Spring MVC. But I read the HTTP documentation which says whenever you have to retrieve data from database prefer GET call. So, Is it there is any I can replace the POST call to GET call from angular JS and pass list of Integers. But, GET HTTP has many drawbacks like : the length of URL is limited.Considering the case where we have to fetch 1000 entities from database. Please suggest me

问题 I am studying for the Spring Core certification and I have following doubt about this question: What is meant by “container” and how do you create one? I know that the Spring container is at the core of the Spring Framework. The container will create the objects, wire them together, configure them, and manage their complete lifecycle from creation till destruction. The Spring container uses dependency injection (DI) to manage the components that make up an application. These objects are

问题 I am new to Spring and Kafka. I am working on a use case [using SpringBoot-kafka] where in users are allowed to create kafka topics at runtime. The spring application is expected to subscribe to these topics pro-grammatically at runtime. What i know so far is that, Kafka listener are design time and hence topics needs to be specified before startup. Is there a way to dynamically subscribe to kafka topics in SpringBoot-Kafka integration? Referred this https://github.com/spring-projects/spring

问题 I want to create a web application that allow users to upload their image to the server. When they click send, their image will be uploaded to the server (multipart). Before saving, I want to make some operation with the image, so I decided to use .. ImageIO.read(InputStream) to get BufferedImage object here is the code: public static BufferedImage getBufferedImageFromMultipartFile(MultipartFile file) throws APIException { BufferedImage bi = null; try { bi = ImageIO.read(file.getInputStream()

问题 My basic question: is there anything built that already does this automatically (doesn't have to be part of a popular library/package)? The main things I'm working with are Spring (MVC) and Jackson2. I understand there are a few manual ways to do this: Create a method in each class that serializes its specific properties into property=value& form (kind of stinks because it's a bunch of logic duplication, I feel). Create a function that accepts an object, and uses reflection to dynamically

问题 We have a Spring web application created using Spring MVC 3.0 In the same application, we have created RESTful web services using Springs's REST API. Now we need to secure those web services. How do we do this in spring? Can we use spring security for this? If not what are the other options? Thanks. 回答1: It really depends on the level of security you want to impose. You could just use simple web.xml based access control with realms, usernames and passwords. Security of your webservices is

问题 I'm trying to send a JSON representation of a Map into my controller as a POST parameter. @RequestMapping(value = "/search.do", method = RequestMethod.GET, consumes = { "application/json" }) public @ResponseBody Results search(@RequestParam("filters") HashMap<String,String> filters, HttpServletRequest request) { //do stuff } I found that @RequestParam would just throw a 500 error, so I tried using @ModelAttribute instead. @RequestMapping(value = "/search.do", method = RequestMethod.GET,