CN108595164A - A kind of conversion method of data format and Java object - Google Patents
A kind of conversion method of data format and Java object Download PDFInfo
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- CN108595164A CN108595164A CN201810305277.3A CN201810305277A CN108595164A CN 108595164 A CN108595164 A CN 108595164A CN 201810305277 A CN201810305277 A CN 201810305277A CN 108595164 A CN108595164 A CN 108595164A
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- G06—COMPUTING; CALCULATING OR COUNTING
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- G06F8/00—Arrangements for software engineering
- G06F8/30—Creation or generation of source code
- G06F8/31—Programming languages or programming paradigms
- G06F8/315—Object-oriented languages
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- G06F8/40—Transformation of program code
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- G06F—ELECTRIC DIGITAL DATA PROCESSING
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Abstract
The present invention relates to the conversion methods of a kind of data format and Java object, build the readable writing module of data format and Java object, input data, determine the Format Type of data, analyze the Java object type being marked by readable writing module, type based on current data, it is instructed, when instruction is data correlation to Java object, interactive module is called to carry out operation of the data correlation to Java object to current data, when instruction is that Java object is associated with to data, it calls interactive module to carry out Java object to current data to be associated with to the operation of data, data will be read to preserve to library, terminate.Present invention is mainly applied to rear ends, can easily get through the interaction bottleneck of front and back end, reach the synchronization of front and back end, conversion regime is clear, and data and Format Object matching, application's expansibility are strong, good compatibility solves the problems, such as unified modification and management, contributes to more concise acquisition result.
Description
Technical field
The present invention relates to the technical field of electric Digital data processing, more particularly to turn of a kind of data format and Java object
Change method.
Background technology
The overwhelming majority is applied, all there is front end and backstage, data interaction is with exploitation in existing data processing
It is unavoidable.
However, the data that front end is submitted need the object for being converted into rear end, due to the version updating of system, each programmer
For the differential expression of data and object, conversion regime disunity, data and the unmatched situation of Format Object are often resulted in, is led
Programmer is caused not applied completely to first data or object, application's expansibility is poor, poor compatibility.
Such mode of operation directly results in the coupling of code, redundancy and unsightly, and operand is big, if without a kind of letter
Clean settling mode will bring the long-term duplication of labour to developer, and influence the readability of code.
Invention content
In order to solve the problems in the existing technology, the present invention provides the data format and Java object of a kind of optimization
Conversion method solves the problems, such as that front and back end is asynchronous using unified readable writing module.
The technical solution adopted in the present invention is a kind of conversion method of data format and Java object, the method packet
Include following steps：
Step 1：Build the readable writing module of data format and Java object；
Step 2：Input data determines the Format Type of data；
Step 3：Analyze the Java object type being marked by readable writing module；
Step 4：Type based on current data, is instructed；When instruction is data correlation to Java object, step 5 is carried out,
When instruction is that Java object is associated with to data, step 6 is carried out；
Step 5：Interactive module is called to carry out operation of the data correlation to Java object to current data；Carry out step 7；
Step 6：Call interactive module to current data carry out Java object be associated with to the operation of data, will read data preserve to
Library；Carry out step 7；
Step 7：Terminate.
Preferably, the type of the data includes Xml, Json.
Preferably, the readable writing module further include for onboard data DataSet, DataRow interaction and Java
The interaction of type HashMap and interaction with the data object TemplateModel of FreeMarker.
Preferably, in the step 1, the structure of the readable writing module of data includes the following steps：
Step 1.1：Several Annotation are stated for data format；Step 1.2：According to the structure of data format, statement pair
The Java object answered, and corresponding Annotation is marked in the field of relevant Java object.
Preferably, the Annotation includes the attribute for being mapped to data format and the additional category for limiting accuracy
Property.
Preferably, in the step 3, analysis includes the following steps：
Step 3.1：By reflection, the field of all Java objects of current type is retrieved；
Step 3.2：It checks whether the field of each Java object is marked corresponding Annotation, is labelled with to retrieving
The field of the Java object of Annotation carries out classified and stored；
Step 3.3：Check whether the base class of current type is the top base class Object of Java, if it is not, base type is obtained,
Step 3.1 is repeated, until obtaining complete structure.
Preferably, the step 5 includes the following steps：
Step 5.1：The analysis result of step 3 is obtained, complete structure is obtained；
Step 5.2：When reading an element of data, corresponding storage organization retrieval whether there is；If it does, carrying out down
Otherwise one step leaps to the ending of the element, terminate；
Step 5.3：It is further analyzed according to the attribute and daughter element that are stored in structure, when the attribute or element for having adaptation
Value, corresponding Java type is converted by the type transducer defined in acquiescence or Annotation by the value of data, and
By reflecting in storage to the field of corresponding Java object；
Step 5.4：After analysis, the value of corresponding Java object storage, can by the content adaptation with corresponding data format
Directly various relevant operations are carried out using Java object.
Preferably, the step 6 comprises the following steps：
Step 6.1：The analysis result of step 3 is obtained, complete structure is obtained；
Step 6.2：According to the instruction in structure, the value of Java object is obtained by reflection, phase is converted to by readable writing module
The character string answered is written in the attribute or element of corresponding data format；If there is daughter element, then constantly downwards, until
Until writing entire complete object.
Preferably, the interactive module is equipped with configuration plug-in module by extensive interface.
The present invention provides the conversion method of a kind of data format of optimization and Java object, by build data format with
The readable writing module of Java object inputs and judges the Format Type of data, analyzes the Java being marked by readable writing module
Object type, the type based on current data, is instructed；When instruction is data correlation to Java object, interaction mould is called
Block carries out operation of the data correlation to Java object to current data, when instruction is that Java object is associated with to data, calls and hands over
Mutual module carries out Java object to current data and is associated with to the operation of data, will read data and preserves to library, ties after the completion
Beam.Present invention is mainly applied to rear ends, can easily get through the interaction bottleneck of front and back end, reach the synchronization of front and back end, conversion side
Formula is clear, and data and Format Object matching, application's expansibility is strong, good compatibility, solves the problems, such as unified modification and management, has
Help more concise acquisition result.
Specific implementation mode
The present invention is described in further detail with reference to embodiment, but protection scope of the present invention is not limited to
This.
The present invention relates to the conversion methods of a kind of data format and Java object, the described method comprises the following steps.
The type of the data includes Xml, Json.
The readable writing module further include for onboard data DataSet, DataRow interaction, with Java standard class
The interaction of type HashMap and interaction with the data object TemplateModel of FreeMarker.
In the present invention, in fact, the type of data includes but not limited to Xml and Json data types, system uses plug-in unit
Mode come register read-write Java object data format, Xml and Json are most common.In addition, system can also realize with it is built-in
The intercommunication of the intercommunication and Java types HashMap of data type DataSet, DataRow, and with FreeMarker's
The intercommunication of data object TemplateModel, if there is new demand, can also be write according to new demand relevant plug-in unit come
Read and write corresponding data format.
In the present invention, each plug-in unit to the explanation of related Annotation can according to actual needs, explain a part or
Person explains all.
Step 1：Build the readable writing module of data format and Java object.
In the step 1, the structure of the readable writing module of data includes the following steps：
Step 1.1：Several Annotation are stated for data format；Step 1.2：According to the structure of data format, statement pair
The Java object answered, and corresponding Annotation is marked in the field of relevant Java object.
The Annotation includes the attribute for being mapped to data format and the additional attribute for limiting accuracy.
In the present invention, Annotation is the newly-increased characteristic of speech sounds of Java object, by stating the Annotation of oneself,
The additional information of attachments such as corresponding Java object, attribute can be given.Annotation can be directed to Xml attributes
SimpleAttribute, for the SimpleElement of simple Xml elements, for the Xml elements containing embedded daughter element
ObjectElement etc..
In the present invention, for example, define type：
@Target(ElementType.FIELD)
@Retention(RetentionPolicy.RUNTIME)
@Documented
public @interface SimpleAttribute {
AccessMode access() default AccessMode.Field;
String defaultValue() default "";
String localName() default "";
NamespaceType namespaceType() default NamespaceType.None;
String namespaceUri() default "";
NamingRule namingRule() default NamingRule.Pascal;
Class< > objectType() default BaseObjectAttribute.class;
boolean useOriginType() default false;
boolean required() default false;
}；Herein, SimpleAttribute is to be mapped to the attribute of Xml, but enough additional attributes can be added for it
Ensure the accuracy of description, wherein localName, namespaceType, namespaceUri are in XML
The characteristic of Namespace, defaultValue are default values, and required is then to carry out that inspection must be recorded.
In the present invention, step 1.2 refers to the structure according to data format, such as the structure of XML, states corresponding Java pairs
As, and corresponding Annotation is marked on relevant field, such as：public class SimpleConfig {
@SimpleAttribute
private boolean check;
@SimpleElement
private String name;
@SimpleAttribute
private int height;
, at this point, the corresponding Xml of this Java object is：<SimpleConfig Height="100" Check="true">
<Name>Hello</Name>
</SimpleConfig>It is completed if read, check will be true in the field of Java object, and name will be
Hello, height 100.
Step 2：Input data determines the Format Type of data.
In the present invention, different Annotation can be defined, the analysis mode for Annotation is also due to number
According to the different and different of format, so needing to judge data format.For example, SimpleAttribute is for dividing
It analyses the attribute in Xml and is used for for the title in Json, SimpleElement for plian value and does not include in Xml elements
Attribute, the expression value pair in Json, TextContent in Xml elements for plian value and it is single include attribute, in Json not by
It supports, ObjectElement indicates that Dictionary is in Xml containing daughter element and for the subobject in Json in Xml elements
Element is title/plian value pair and less pays close attention to title, and is name/value pair in Json object, also less pays close attention to title,
ObjectDictionary is to pay close attention to for title/daughter element pair and less title in Xml elements and Json object,
TagElement is only outer layer nesting in Xml elements, this layer of nesting can be crossed using the label, reduces subclass definitions, and
It is only that outer layer is nested in Json labels, can crosses this layer of nesting using the label, reduce subclass definitions.
Step 3：Analyze the Java object type being marked by readable writing module.
In the step 3, analysis includes the following steps：
Step 3.1：By reflection, the field of all Java objects of current type is retrieved；
Step 3.2：It checks whether the field of each Java object is marked corresponding Annotation, is labelled with to retrieving
The field of the Java object of Annotation carries out classified and stored；
Step 3.3：Check whether the base class of current type is the top base class Object of Java, if it is not, base type is obtained,
Step 3.1 is repeated, until obtaining complete structure.
In the present invention, if necessary to reading format data, the evaluation of markers Java object type of Annotation first.
Since object-oriented supports that this analysis will also constantly analyze its base type other than analyzing itself after bearing structure, if detection
It is the such Annotation of ObjectElement or ObjectDictionary to go out Annotation, will continue to bore
It takes and analyzes its corresponding Java type.In this way, a complete format will be obtained.As it can be seen that if the Field of corresponding Java statements
It supports nested structure, analysis program can inwardly drill through, analyzes its internal declaration structure, obtaining a complete structure always is
Only.
Step 4：Type based on current data, is instructed；When instruction is data correlation to Java object, walked
Rapid 5, when instruction is that Java object is associated with to data, carry out step 6.
Step 5：Interactive module is called to carry out operation of the data correlation to Java object to current data；Carry out step 7.
The step 5 includes the following steps：
Step 5.1：The analysis result of step 3 is obtained, complete structure is obtained；
Step 5.2：When reading an element of data, corresponding storage organization retrieval whether there is；If it does, carrying out down
Otherwise one step leaps to the ending of the element, terminate；
Step 5.3：It is further analyzed according to the attribute and daughter element that are stored in structure, when the attribute or element for having adaptation
Value, corresponding Java type is converted by the type transducer defined in acquiescence or Annotation by the value of data, and
By reflecting in storage to the field of corresponding Java object；
Step 5.4：After analysis, the value of corresponding Java object storage, can by the content adaptation with corresponding data format
Directly various relevant operations are carried out using Java object.
In the present invention, by taking XML as an example, XML is analyzed by the way of PULL.When reading an element, will go
Corresponding storage organization goes retrieval whether there is, if it does not, the ending that will leap to the element；If it does, by basis
The attribute stored in structure, daughter element etc. are further analyzed, when the attribute or element value for having adaptation, will by acquiescence or
The value of Xml is converted into corresponding Java type by the type transducer defined in person Annotation, and is arrived by reflecting storage
In corresponding field
Step 6：Call interactive module to current data carry out Java object be associated with to the operation of data, will read data preserve to
Library；Carry out step 7.
The step 6 comprises the following steps：
Step 6.1：The analysis result of step 3 is obtained, complete structure is obtained；
Step 6.2：According to the instruction in structure, the value of Java object is obtained by reflection, phase is converted to by readable writing module
The character string answered is written in the attribute or element of corresponding data format；If there is daughter element, then constantly downwards, until
Until writing entire complete object.
Step 7：Terminate.
The interactive module is equipped with configuration plug-in module by extensive interface.
In the present invention, interactive module can also be equipped with card module by extensive interface.Configuration plug-in is exactly logical
It crossing and defines a specification, subsequent developer can define the Xml segments of the Java of oneself, and provided by configuration plug-in
Mechanism is automatically registered in system, thus has corresponding explanation to oneself defining Xml segments.System core code energy
Recognizing it by the tag name of Xml, to be which plug-in unit can call corresponding code to go to explain.
In the present invention, card module makes the definition of Xml that there is infinite expanding ability, such system kernel only to need definition one
A appropriate Xml frames, it will be able to obtain good autgmentability, handle problem of all kinds.Configuration plug-in is due to incorporating
Related content in aforementioned Annotation, so read-write XML does not need to write special analysis code.Json formats are to matching
The support for setting plug-in unit is limited, subsequently allows Json to support configuration plug-in completely consideration, while considering the versioned of label allocation, i.e.,
Identical Xml Tag Name can be automatically mapped to because of the difference of version on different java class, this facilitates upgrading and under
It is compatible.
The present invention inputs and judges the format class of data by the readable writing module of structure data format and Java object
Type, analyzes the Java object type being marked by readable writing module, and the type based on current data is instructed；Work as instruction
For data correlation to Java object when, call interactive module to current data carry out data correlation to Java object operation, when
When instruction is that Java object is associated with to data, calls interactive module to carry out Java object to current data and be associated with to the behaviour of data
Make, data will be read and preserved to library, terminated after the completion.Present invention is mainly applied to rear ends, can easily get through front and back end
Interaction bottleneck, reach the synchronization of front and back end, conversion regime is clear, data and Format Object matching, application's expansibility is strong, simultaneous
Capacitive is good, solves the problems, such as unified modification and management, contributes to more concise acquisition result.
Claims (9)
1. the conversion method of a kind of data format and Java object, it is characterised in that：It the described method comprises the following steps：
Step 1：Build the readable writing module of data format and Java object；
Step 2：Input data determines the Format Type of data；
Step 3：Analyze the Java object type being marked by readable writing module；
Step 4：Type based on current data, is instructed；When instruction is data correlation to Java object, step 5 is carried out,
When instruction is that Java object is associated with to data, step 6 is carried out；
Step 5：Interactive module is called to carry out operation of the data correlation to Java object to current data；Carry out step 7；
Step 6：Call interactive module to current data carry out Java object be associated with to the operation of data, will read data preserve to
Library；Carry out step 7；
Step 7：Terminate.
2. the conversion method of a kind of data format and Java object according to claim 1, it is characterised in that：The data
Type include Xml, Json.
3. the conversion method of a kind of data format and Java object according to claim 1, it is characterised in that：It is described readable
Writing module further include for onboard data DataSet, DataRow interaction, with the interaction of Java types HashMap and
With the interaction of the data object TemplateModel of FreeMarker.
4. the conversion method of a kind of data format and Java object according to claim 1, it is characterised in that：The step
In 1, the structure of the readable writing module of data includes the following steps：
Step 1.1：Several Annotation are stated for data format；
Step 1.2：According to the structure of data format, corresponding Java object is stated, and in the field of relevant Java object
Mark corresponding Annotation.
5. the conversion method of a kind of data format and Java object according to claim 4, it is characterised in that：It is described
Annotation includes the attribute for being mapped to data format and the additional attribute for limiting accuracy.
6. the conversion method of a kind of data format and Java object according to claim 4, it is characterised in that：The step
In 3, analysis includes the following steps：
Step 3.1：By reflection, the field of all Java objects of current type is retrieved；
Step 3.2：It checks whether the field of each Java object is marked corresponding Annotation, is labelled with to retrieving
The field of the Java object of Annotation carries out classified and stored；
Step 3.3：Check whether the base class of current type is the top base class Object of Java, if it is not, base type is obtained,
Step 3.1 is repeated, until obtaining complete structure.
7. the conversion method of a kind of data format and Java object according to claim 1, it is characterised in that：The step
5 include the following steps：
Step 5.1：The analysis result of step 3 is obtained, complete structure is obtained；
Step 5.2：When reading an element of data, corresponding storage organization retrieval whether there is；If it does, carrying out down
Otherwise one step leaps to the ending of the element, terminate；
Step 5.3：It is further analyzed according to the attribute and daughter element that are stored in structure, when the attribute or element for having adaptation
Value, corresponding Java type is converted by the type transducer defined in acquiescence or Annotation by the value of data, and
By reflecting in storage to the field of corresponding Java object；
Step 5.4：After analysis, the value of corresponding Java object storage, can by the content adaptation with corresponding data format
Directly various relevant operations are carried out using Java object.
8. the conversion method of a kind of data format and Java object according to claim 1, it is characterised in that：The step
6 include the following steps：
Step 6.1：The analysis result of step 3 is obtained, complete structure is obtained；
Step 6.2：According to the instruction in structure, the value of Java object is obtained by reflection, phase is converted to by readable writing module
The character string answered is written in the attribute or element of corresponding data format；If there is daughter element, then constantly downwards, until
Until writing entire complete object.
9. the conversion method of a kind of data format and Java object according to claim 1, it is characterised in that：The interaction
Module is equipped with configuration plug-in module by extensive interface.
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Application publication date: 20180928 |