pojo

问题 I am trying to map below JSON to a POJO Class using Gson library. Below is the JSON response and POJO Class and mapping done import java.util.Map; import com.google.gson.JsonElement; public class DataResponse { private String $status; private Map<String, JsonElement> $payload; public String get$status() { return $status; } public void set$status(String $status) { this.$status = $status; } public Map<String, JsonElement> get$payload() { return $payload; } public void set$payload(Map<String,

问题 I have a pojo class as follows. public class Person { private String name; private Address address; public String getName() { ... } public Address getAddress() { ... } //Address bean public void setName() { ... } public void setAddress() { ... } } Get data from DB (json converted to above POJO) Show it to user User changes his Address Saving back to DB This is what currently happening. Now I am trying to make a delta of user made changes Vs database changes. (which is address alone) I need to

问题 is it possible to use reverse engineering on a denormalized database? hibernate reverse engineering to generate the Pojo classes for all the tables in the database didnt seem to work because none of the tables have any primary keys or foreign keys in them. what is the solution to this? i did it using Netbeans & the error was that Pojo classes cant be generated because the tables do not have primary keys. 回答1: create the primary/foreign keys in the database befor using the tool. Maybe in a

问题 I need to build a parser to parse an XML file to a Java object. I use Jackson to do this and followed the steps provided in THIS tutorial. In the tutorial is a section ' Manipulating Nested Elements and Lists in XML '. I followed it, but unfortunately I can't get the desired output of all my required elements - I want to output first and last of all my authors. And I only get it for my last author in the XML -file like this: [{nameList={person={first=Karl, last=S}}}] My XML file looks like

问题 I have a POJO class. It holds some Strings and I want to pass values from RecyclerView to an Activity . I tried something and failed. How do I do that? Model public class DetailModel { String title; public DetailModel() { } public DetailModel(String title) { this.title = title; } public String getTitle() { return title; } public void setTitle(String title) { this.title = title; } } Adapter, onClick holder.cardView.setOnClickListener(new View.OnClickListener() { @Override public void onClick

问题 I'm creating a Compact Framework 3.5 application, which is the client side of an older Java webapp. The communication protocol between both sides is REST+JSON. Serialization of the POJOs to JSON is not a matter since the POJOs already exist. But instead of rewriting from scratch a C# version of all the POJOs sources to be able to deserialize the JSON client-side, I would prefer a generation using some tools. Or at least, do the conversion manually with a "standardized" method. Do you know

问题 I need an open-source tool which can convert POJOs to XML and JSON strings. Jersey (and probably other JAX-RS implementations) would fit these requirements if mappings could be configured through xml-files but not through annotations. Is there anything suitable? 回答1: POJO to XML JAXB is the Java standard (JSR-222) for converting Java objects to/from XML (I am a member of the JAXB expert group): http://bdoughan.blogspot.com/2010/07/jaxb-xml-binding-standard.html POJO to JSON People have been

问题 I have a report created in jasperreports 2.0.4 using iReport. I have two subreports. These two subreports share the same jrxml. I'm passing the jrxml as the subreport's report expression in a parameter. I have this code for this parameter <parameter name="SUB_EXP" class="net.sf.jasperreports.engine.JasperReport"/> Everything works fine. The issue is with the two subreports datasource The datasource of these subreport comes from the SAME list of POJOs passed as parameter <parameter name="SUB

问题 How to convert List<Object[]> to List<POJOObject> Here is example //So, lets us say I have Object[], I want to have a class as follows: class POJOObject { //maps to Object[0] private Integer x; //maps to Object[1] private Long y; //maps to Object[2] private String y; } Is there any easy way to do that? What library can be useful here? Thanks. 回答1: Maybe http://dozer.sourceforge.net can help you. It is a mapping library configurable by xml. I tried it shortly with this: public class Main {

问题 Well that's really embarrassing I have made a standard pojo class and its dao class for data retrieval purpose. I am having a difficulty to understand a basic procedure to how to handle a customized query data to Pojo class. let's say my User class is public class User{ private int userId; private String username; private int addressId; } public class Address{ private int addressId; private String zip; } public class UserDAO{ public void getUserDetails(){ String getSql = select u.userId, u