constructor « Core « Spring Q&A





1. Spring constructor params?    stackoverflow.com

Some of my classes have final fields that are populated from the constructor as well as properties that can be assigned from getters and setters. If I can do this using spring, ...

2. Spring: Inject static member (System.in) via constructor    stackoverflow.com

I wrote some sort of console client for a simple application. To be more flexible, I thought it would be nice to only depend on java.io.Input-/OutputStream, instead of accessing System.in/out directly. I renamed ...

3. Constructor versus setter injection    stackoverflow.com

I'm currently designing an API where I wish to allow configuration via a variety of methods. One method is via an XML configuration schema and another method is through an API ...

4. Failing to create Innerbean using Spring - BeanInstantiationException No default constructor found    stackoverflow.com

I started learning spring from Spring reference 3.0 and i wanted to try how to instantiate inner bean: Here is my code:

package com.springexample;

public class ExampleBean {

 private String samplePropertyExampleBean;

 public void setSamplePropertyExampleBean(String ...

5. Spring - Modifying constructor values on a per instance basis for a static initializer/MethodInvokingFactoryBean    stackoverflow.com

Here's the scenario:

  • I need to inject a bean into a set of classes.
  • The set of dependent classes is only known at runtime when those dependent classes are instantiated
  • The bean I ...

6. Spring constructor injection error    stackoverflow.com

I am getting the following error for a bean in my application context:

Related cause: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'businessLogicContext' d efined in class path resource [activemq-jms-consumer.xml]: Unsatisfied dependency expressed ...

7. compile time weaving and autowired on constructor    stackoverflow.com

@Configurable
public TestClass(){

@Autowired SomeOtherClass otherClass;

public TestClass(Var1 var){

System.out.println(otherClass);

}


}
I using compile time weaving and call new testClass(var). i using dependency injection on the constructor like above "otherClass". It printed out 'null'. From my ...

8. Constructor arguments in autowiring sources    stackoverflow.com

What exactly causes this?

org.springframework.beans.factory.NoSuchBeanDefinitionException: \
No unique bean of type [fi.utu.keycard.business.KeyCardManager] \
is defined: expected single matching bean but found 2: \
[dataBaseTarget, database]

// etc. (rest of Stack Trace is irrelevant)
What I need is ...

9. Spring autowiring setter/constructor PROs and CONs    stackoverflow.com

When using @Autowired (not xml configuration), could someone compare the set/constructor binding advantages and disadvantages? See the following examples:

public class Example{
   private Logger log;
   // constructor wiring
 ...





10. Passing runtime known vaues to constructor called by Spring    stackoverflow.com

I am creating an instance of an object (third party so I cant change it) who's constructor takes an IP address that isnt known until runtime. So I dont/cant hardcode ...

11. constructor injection problem?    stackoverflow.com

Im nw to spring frame work im trying to implement constructor injection but im not geting the values, following is my bean configuration file

<beans

xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
   ...

12. Springframework constructor-arg    stackoverflow.com

I have a MainClass which have 2 variables. I would like to pass those 2 values to a springframework bean class "Test". how do I define that in applicationContext.xml ...

13. How to do Spring constructor injection with multiple parameters    stackoverflow.com

Suppose we have a Class A, and B. inside B's constructor, not only A is needed, but also some other String / boolean values. e.g

@Componenet(value = "B")
@DependsOn(value = "A")
public class B{
 ...

14. Spring p namespace for constructor args?    stackoverflow.com

Is there an equivalent of the p namespace for constructor args in Spring? I would love to shorten that XML :)

15. Setter DI vs. Constructor DI in Spring?    stackoverflow.com

Spring has two two types of DI: setter DI and construction DI. Constructor-based DI fixes the order in which the dependencies need to be injected. Setter based DI does not offer this. Setter-based ...

16. Injecting more than single value in a Constructor    forum.springsource.org

Injecting more than single value in a Constructor Hi, Is there a way of setting more than one property in C'tor without using setter methods? Eg: public class Employee{ String firstName; ...





17. how to provide constructor argument of class type    forum.springsource.org

how to provide constructor argument of class type I am trying to use org.apache.mina.core.service.SimpleIoProcessorPool which takes IoProcessor type as argument like this. SimpleIoProcessorPool pool = new SimpleIoProcessorPool(NioProcessor.cla ss); I don't know ...

18. Intercepting Constructor-calls    forum.springsource.org

19. Constructor arguments setup for Factory method    forum.springsource.org

Constructor arguments setup for Factory method Hi, I can not setup the factory method's constructor arguments I get this errors:Ambiguous factory method argument types - did you specify the correct bean ...

20. Error on boolean constructor argument    forum.springsource.org

Here's a strange error I got during context initialization on a CustomDateEditor bean. Code: true The error I got is with the second contructor argument: ...

21. Dynamic constructor argument    forum.springsource.org

Dynamic constructor argument Hi all, I have been using spring for a while and am very happy with the result but I have now bumped into a problem that I am ...

22. how to use twittertemplate with dynamic constructor argument    forum.springsource.org

how to use twittertemplate with dynamic constructor argument dear all, i tried spring integration to update twitter status. it works fine with single static user in property-placeholder. then i need to ...

23. Spring doesn't honor private constructor?    forum.springsource.org

Hi, In spring-2.5.1, I am able to create a bean in xml even if my class is declared private constructor! Is this normal? Shouldn't spring honor my privacy? Thanks, -Zemian

24. One more constructor for ApplicationLauncher?    forum.springsource.org

25. constructor-arg to specify primitive array?    forum.springsource.org

constructor-arg to specify primitive array? hi, I've recently been struggling to config my application context to allow a bean to be initialized with a constructor that accepts a array of int ...

26. Blueprint can't convert types for constructor injection    forum.springsource.org

Blueprint can't convert types for constructor injection Blueprint can't inject primitive in constructor arguments because the Strings from the XML are not converted to the respective primitive type. The reason seems ...

27. getting error in the constructor arguemement..!1    forum.springsource.org

getting error in the constructor arguemement..!1 HI , I am using the below xml tag in the configuration file .... Code:

28. constructor-based injection - Unsatisfied dependency    forum.springsource.org

constructor-based injection - Unsatisfied dependency Hi All I am new user of Spring (btw, it's fantastic !) and while working through the examples from Reference manual, I found this: I try ...

29. Strange behavior in constructor injection.    forum.springsource.org

Hi, I have the following bean in my application context: Code: C:/Tomcat/pc2/WEB-INF/lucene-index If I remove the parameter "index" in constructor-arg tag, Spring try inject ...

30. IOC runtime constructor args    forum.springsource.org

IOC runtime constructor args Hi, I am a new Spring user so forgive me if this is a common or silly question. Currently I am experimenting with Sping in a standalone ...

31. Erroneous "No constructor with 1 argument defined in cl    forum.springsource.org

I have a factory class in my project. This class has a static factory method "createBean(SomeOtherBean arg)", with a bean declaration as follows: Code: ...

32. Problem with static factory method constructors    forum.springsource.org

Problem with static factory method constructors I'm creating a javax.mail.session from the static getDefaultInstance method. the method is overloaded with 2 signatures, one with just a props, and a second with ...

33. Creating mixin fails if target has no default constructor    forum.springsource.org

Jul 1st, 2005, 11:57 AM #1 swisswheel View Profile View Forum Posts Private Message Junior Member Join Date Nov 2004 Location Zurich [CH] Posts 14 Creating mixin fails if target has ...

34. Constructor signature and spring-core    forum.springsource.org

Error creating bean with name 'phoneBook' defined in class path resource [org/springframework/webflow/samples/phonebook/deploy/service-layer.xml]: 1 constructor arguments specified but no matching constructor found in bean 'phoneBook' (hint: specify index arguments for simple parameters ...

35. how to pass a parameter to a constructor    forum.springsource.org

Hey guys I have to pass the variable "i" to the constructor of AuthenticationService ("as") at the following piece of code: int i = x; String[] configFiles = new String[] {"beans.xml"}; ...

36. SwingActionAdapter - why protected constructor?    forum.springsource.org

Hi, everyone! Is there a reason why SwingActionAdapter has protected constructor? I'm forced to create an extended class just to declare public constructor... Thanx, neunistivlija

37. TestCase(String) constructor visibility    forum.springsource.org

Hi, I am using AbstractDependencyInjectionSpringContextTests, to inject objects into my test cases, and it works really well. However, I want to start using Junit Perf to Load Test my system with ...

38. CharArrayPropertyEditor problem with constructor-arg type conversion    forum.springsource.org

CharArrayPropertyEditor problem with constructor-arg type conversion I implemented a CharArrayPropertyEditor which does a simple String<->char[] translation. I have registered this with my BeanFactory as seen below before attempting to load the ...

39. Help with constructor injection    forum.springsource.org

I am trying to construct teh following object in Spring but it doesn't seem to be working. Can someone tell me what I am missing. Code: public User(String username, String password, ...

40. constructor-arg ambiguities    forum.springsource.org

constructor-arg ambiguities com.rjlg.ehmdrc.domain.party.PersonImpl public PersistentEntityDaoImpl(Class generic) { super(generic); } Error creating bean with name 'personDao' defined in URL [jar:file:/C:/working/ehmdrc/dev/ehmdrc-core/build/jar/ehmdrc-core.jar!/conf/spring/applicationContext-dao.xml]: 1 constructor arguments ...

41. protected constructor    forum.springsource.org

what would the configuration look like for a file that has a protected constructor? I've got protected Foo(int a) { ... } and my config for it is ...

42. Using character < in constructor-arg ???    forum.springsource.org

Using character < in constructor-arg ??? Hi, I need the character "<" as part of a string in some constructors. Please see also the following sample: ...

43. how to combine lookup method Injection question with constructor/setter injection?    forum.springsource.org

Hi, I can't figure out how to combine 'lookup method injection' with 'constructor method injection' (http://static.springframework.org/sp...html#d0e1161): Note that lookup method injection can be combined with Constructor Injection (supplying optional constructor arguments ...

44. Composing constructor arguments    forum.springsource.org

Composing constructor arguments Hi, This seems to me like a very simple question, but after a long time searching around I wasn't able to find an answer... I have a simple ...

45. Constructor injection issue    forum.springsource.org

I have a class with two strings userId and password, both java.lang.String. If I have to inject this fields using constructor injection. How would I do this? Code:

46. constructor argument passing    forum.springsource.org

47. Constructor Q    forum.springsource.org

Constructor Q Hi all, Trying to populate multiple bean's constructors with differently named instances of the same implemented bean and get a runtime error message "... found 5 instances...only expected 1 ...

48. Why has TigerEnumComboBoxBinder a protected constructor?    forum.springsource.org

Hi, I tried to use the TigerEnumComboBoxBinder within the bindersForPropertyNames section of the SwingBinderSelectionStrategy, but this produces an IllegalArgumentException: Code: java.lang.IllegalArgumentException: Could not instantiate new binder with default constructor: org.springframework.richclient.form.binding.swing.TigerEnumComboBoxBinder After ...

49. Autowiring and constructor injection    forum.springsource.org

Autowiring and constructor injection I am trying to autowire a bean from the following context: Code:

50. constructor argument problem    forum.springsource.org

51. PropertyPlaceConfigurer versus constructor-arg    forum.springsource.org

PropertyPlaceConfigurer versus constructor-arg With the following, using GenericApplicationContext and XmlBeanDefinitionReader, the ${bt.temp.dir} is not substituted. As you can see, I've forced the right setting of lazy-init, so I don't know what ...

52. Upgrading from Spring 2.0 to Spring 2.5 - did constructor detection change?    forum.springsource.org

I'm trying to upgrade an application from Spring 2.0.2 to 2.5. I have two constructors in some of my classes, and for some reason, Spring is trying to DI into the ...

53. Constructor Injection Circular Dependencies    forum.springsource.org

I like using constructor injection because I like immutability and final instance vars. However, I sometimes run in to circular dependencies for which constructor injection doesn't work. I was looking at ...

54. "No constructor with 0 arguments..." still in 2.0.2    forum.springsource.org

I saw a bunch if _closed_ issues for this problem, but I am still getting the errors with the latest build. The beans are being constructor @Autowired. Did I miss some ...

55. Non-Spring-managed constructor arguments for final fields?    forum.springsource.org

Non-Spring-managed constructor arguments for final fields? Hi! I am currently evaluating whether to replace our home-grown configuration system with Spring in the NetarchiveSuite system (see http://netarchive.dk/suite). My first attempt to convert ...

56. Use static attribute in constructor-arg    forum.springsource.org

Use static attribute in constructor-arg I try to create a bean from the following contructor : Code: B1STCXML2BD(org.hibernate.cfg.Configuration cfg, boolean viderTablesAvantImport, org.hibernate.ReplicationMode modeReplication) Basicely it looks like this in Java : ...

57. Superclass has no null constructors but no arguments were given    forum.springsource.org

Feb 21st, 2008, 06:22 PM #1 Warren View Profile View Forum Posts Private Message Junior Member Join Date Feb 2008 Posts 8 Superclass has no null constructors but no arguments were ...

58. Inject class into constructor    forum.springsource.org

Hello, I want to create a bean for a ClassBasedEdgeFactory (JGraphT): http://www.jgrapht.org/javadoc/org/j...geFactory.html As you can see there is only one constructor: Code: ClassBasedEdgeFactory(java.lang.Class edgeClass) I defined a class my.package.Edge. ...

59. Autowire Constructor    forum.springsource.org

Autowire Constructor I've been doing a component scan for the @Service tag and then autowiring my setters to keep my xml as minimal as possible. However I have recently created a ...

60. Ambiguous constructor argument types ERROR    forum.springsource.org

Ambiguous constructor argument types ERROR Similar connfiguration works for other insert sql's. But for this one somehow it's not working. What am i missing here? Error creating bean with name insertDataQuery ...

61. Superclass has no null constructors but no arguments were given    forum.springsource.org

Superclass has no null constructors but no arguments were given Hi, I'm new in Spring, and when I tried one of the example in spring in action,I got the following error: ...

63. For injection, setter and constructor should be public ?    forum.springsource.org

Constructors can be anything, spring uses reflection for that so you could go with private constructors. The setters have to be public, we use the normal Property stuff which ships with ...

64. pass arguments to constructor    forum.springsource.org

Hi i have a service-class which handles a treestructor in the database: Code: public interface IDwhTree { } public class DwhTree implements IDwhTree { public DwhTree() {} public DwhTree(AnObject obj) {....} ...

65. Override constructor-arg    forum.springsource.org

Override constructor-arg How do I override the value for a bean constructor using a properties file? For example, instead of: I want to do ...

66. Constructor overloading?    forum.springsource.org

67. ObjectFactory and not default constructor    forum.springsource.org

ObjectFactory and not default constructor Hello I'm using ObjectFactory to produce new instances of tree nodes which are created dynamically. Now I have like is shown in http://static.springframework.org/sp...-factory-aware but there is ...

68. constructor autowiring    forum.springsource.org

Using 2.5 If I have an existing bean having constructors Bean(A), Bean(A, B), Bean (A, B, C), Bean (A, D) and A, B, C and D are all present in the ...

69. How to use constructor overloading in spring?    forum.springsource.org

How to use constructor overloading in spring? Hi, I just started learning spring. to pass the constructor values, we use element like below.

70. Constructor Injection / Argument Injection    forum.springsource.org

Constructor Injection / Argument Injection Hi, I'm somehow confused by the constructor argument resolution - I have defined this simple bean: Code: package my.test; class ConstructorBean { public ConstructorBean(String a, int ...

71. Why is a default constructor needed for injection    forum.springsource.org

Why is a default constructor needed for injection Hello, I'm new to the spring framework and I've got a question: When I want to use Dependency Injection, why is it so ...

72. Private Constructor not "private" anymore in Spring POJOs?    forum.springsource.org

Private Constructor not "private" anymore in Spring POJOs? Hi, I had marked my constructor as PRIVATE with the intention of making my class as Singleton. I have provided a static factory ...

73. Autowired field, used in constructor    forum.springsource.org

Hi all!! I want to know if this is possible, or the way todo this to work public class MyClass{ @Autowired private Foo foo; public MyClass(){ someMethod(foo); } .... in the ...

74. private constructor    forum.springsource.org

public class Demo { private Demo(){} public void f1(){ System.out.println("Hello"); } } ((Demo)factory.getBean("d")).f1();

75. How to dynamically inject values to a constructor?    forum.springsource.org

What if i am having bean def something ike this... how ...

76. Can't find constructors that are there, finding ones that aren't.    forum.springsource.org

Can't find constructors that are there, finding ones that aren't. I cannot figure out for the life of me why spring is able to call a constructor that doesn't seem to ...

77. spring not able to resolve constructor    forum.springsource.org

spring not able to resolve constructor I am sure this issue would be similar to one on some other thread posted. Just point me to that thread if any. Query: I ...

78. Constructor with parameters    forum.springsource.org

79. Wiring without get/set or constructor-args    forum.springsource.org

Is there a way of using a method other than getters & setters to wire an object up? In particular, I have an object that as an add method which is ...

80. DI Constructor Issue    forum.springsource.org

DI Constructor Issue Hi, Ive just started using aop for some simple logging in a new project. Ive read through quite a few threads and various sites but cant seem to ...

81. Spring can't find lower visibility constructor if a public default constructor exits    forum.springsource.org

Spring can't find lower visibility constructor if a public default constructor exits Apologies if this question has been answered before on the forum. If so, please point me to the thread ...

82. when to use Setter Injection & constructor Injection    forum.springsource.org

Dear all I am not getting idea behind IOC that is when to use setter Injection & constructor Injection and I have gone through some of the documents which i found ...

83. Constructor arguments for identifying fields    forum.springsource.org

Constructor arguments for identifying fields I hope this is a stupid question, but I'm a bit stuck. Roo manages the identifying field for an entity typically this way: @Id @GeneratedValue(strategy = ...

84. Problem in Constructor Expressions in the SELECT Clause    forum.springsource.org

Problem in Constructor Expressions in the SELECT Clause Hello, I'm experimenting with Spring and although I'm not sure if it's a Spring problem the following query: Code: SELECT NEW com.selim.dto.BookDto(b.id, b.title, ...

85. mixing constructor autowiring with setters.    forum.springsource.org

HI i want to achieve this, what is the best way to do it. i have Code: class Library { private BookService bookService; private Integer maxCheckout; @Autowired Library(@Qualifier("cablepuff.bookService") BookService bookService) { ...

86. Define an Inner class using DefaultClassOrInterfaceTypeDetails constructor    forum.springsource.org

Define an Inner class using DefaultClassOrInterfaceTypeDetails constructor Hi! I'm replicating classes for an Add-on that we are working and I can't find the way to create a Class with *DefaultClassOrInterfaceTypeDetails* contructor ...

87. easy way to use constructor using Spring IOC    forums.oracle.com