pojo | 易学教程

Parse Json with Gson without POJO?

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问题 Hoping there is an easy solution from someone on here. I know there are similar questions but I can't seem to modify them to work with my problem. I am trying to parse the string for "formatted_address" in this json response: { "results" : [ { "address_components" : [ { "long_name" : "Google Building 42", "short_name" : "Google Bldg 42", "types" : [ "premise" ] }, { "long_name" : "1600", "short_name" : "1600", "types" : [ "street_number" ] }, { "long_name" : "Amphitheatre Parkway", "short

Custom Class for JasperReports field

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问题 I would like to create a report with a custom class as follows: public class Class1 { String cl1_f1; String cl1_f2; } public class Class2 { String cl2_f1; String cl2_f2; Class1 cl1_ob1; } Now I pass Class2 in the report through fields and JRBeanCollectionDataSource. <subDataset name="myitems"> <field name="cl2_f1" class="java.lang.String"/> <field name="cl2_f2" class="java.lang.String"/> **<field name="cl1_ob1" class="Class2"/>** </subDataset> For the third parameter, I would like to mention

Parsing Json File using Jackson

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问题 { "TestSuite":{ "TestSuiteInfo":{ "-description":"parse" }, "TestCase":[ { "TestCaseData":{ "-sequence":"sequential", "-testNumber":"2", "-testCaseFile":"testcase\\Web\\Ab.xml" } }, { "TestCaseData":{ "-sequence":"sequential", "-testNumber":"3", "-testCaseFile":"testcase\\Web\\BC.xml" } } ] } } My Pojos are: public class TestSuite { private TestSuiteInfo testSuiteInfo; private TestCase listOfTestCases; public TestSuiteInfo getTestSuiteInfo() { return testSuiteInfo; } public void

Jersey 2.0 and Moxy Internal Server Error But No Server Log

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问题 I followed the Jersey 2.0 document (https://jersey.java.net/documentation/latest/user-guide.html#json.moxy), modified pom.xml, included jersey-media-moxy artifact, compiled and installed. I could get basic POJO to JSON mapping work for both Produces and Consumes cases. However, when I tried with some POJO with complex data type as resource return type, I got a lot Status 500 Internal Server Error but without any server log. It is very annoying. Does anybody know if it is a bug or I missed

How to turn this JSON response into POJO?

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问题 The automated JSON to POJO fails badly with this JSON. Please note that the number of items is different from one request to the other. here I'm including JSON response with 2 items. { "status": 1, "complete": 1, "list": { "734233858": { "item_id": "734233858", "resolved_id": "734233858", "given_url": "https://blog.openshift.com/developing-single-page-web-applications-using-java-8-spark-mongodb-and-angularjs/", "given_title": "", "favorite": "0", "status": "0", "time_added": "1466459879",

Multiple writable mappings in JPA?

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I would like to make a review about some user at my system, this review is made by others users. So here it's my user's table: And this is my user_review table: The EclipseLink is generating like this (actually it insted of @PrimaryJoinColumn was @JoinColumn it change it because of this post ): @Id @GeneratedValue(strategy=GenerationType.IDENTITY) private Integer id; @Temporal(TemporalType.DATE) private Date date; private String review; //bi-directional many-to-one association to User // @PrimaryKeyJoinColumn(name="id_user_reviewer") @ManyToOne @JoinColumn(name="id_user_reviewer") private User

How to map a native query to POJO class using jpa and hibernate

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I am using both JPA and hibernate in my project. I have created a query in which i made join operation on many tables. So I created a native one. The results that i get are in a list of object[] but i would like the results to be converted automatically to a java POJO class . You can check both the query syntax and POJO java class below. JPA Query @Query(value = "SELECT obsp.Identifier, obs.phenomenontimestart, nv.value " + "From Series s " + "INNER JOIN Featureofinterest fi on s.featureofinterestid = fi.featureofinterestid " + "INNER JOIN ObservableProperty obsp on s.observablepropertyid =

Programming difference between POJO and Bean

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问题 I have the following two classes. Can I say the first one is a POJO class and the second one as a Bean class? 1) POJO class, since it has only getter and setter method, and all the member are declared as private public class POJO { private int id; private String name; public int getId() { return id; } public String getName() { return name; } public void setId() { this.id = id; } public void setName() { this.name = name; } } 2) Bean class - all the member variables are private, has getters and

Generate setters that return self in Eclipse

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问题 I'd like to have my setters so that I can chain them like: myPojo.setX(x).setY(y); Usually I generate setters with Eclipse but unfortunately code template for setters allows me to change only the body of the setter, not the signature. What would be the easiest way to complete the above? Besides search-and-replace + manual editing? :) 回答1: You could use the Editor/Templates for this purpose. To define a new Template open the Preferences Window, then Java->Editor->Templates. In this window you

JPA best practices? [closed]

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问题 Closed . This question is opinion-based. It is not currently accepting answers. Want to improve this question? Update the question so it can be answered with facts and citations by editing this post. Closed last year . I’m working on a little multi-tier application utilizing JPA/EclipseLink as a persistence layer. In my current design I have two sets of objects, POJOs and Entity objects, I use POJOs for general programming tasks and Entity classes are used for DB read/write and table mapping.