PageAttribute

java.lang.Object
- org.htmlparser.Attribute
- - org.htmlparser.lexer.PageAttribute

所有已实现的接口:

java.io.Serializable
```
public class PageAttribute
extends Attribute
```
An attribute within a tag on a page. This attribute is similar to Attribute but 'lazy loaded' from the Page by providing the page and cursor offsets into the page for the name and value. This is done for speed, since if the name and value are not needed we can avoid the cost and memory overhead of creating the strings.
Thus the property getters, defer to the base class unless the property is null, in which case an attempt is made to read it from the underlying page. Optimizations in the predicates and length calculation defer the actual instantiation of strings until absolutely needed.

另请参阅:

序列化表格

构造器概要

构造器
构造器和说明
`PageAttribute()` Create an empty attribute.
`PageAttribute(Page page, int name_start, int name_end, int value_start, int value_end, char quote)` Create an attribute.
`PageAttribute(java.lang.String value)` Create a whitespace attribute with the value given.
`PageAttribute(java.lang.String name, java.lang.String value)` Create an attribute with the name and value given.
`PageAttribute(java.lang.String name, java.lang.String value, char quote)` Create an attribute with the name, value and quote given.
`PageAttribute(java.lang.String name, java.lang.String assignment, java.lang.String value)` Create an attribute with the name, assignment string and value given.
`PageAttribute(java.lang.String name, java.lang.String assignment, java.lang.String value, char quote)` Create an attribute with the name, assignment string, value and quote given.

方法概要

所有方法实例方法具体方法
限定符和类型	方法和说明
`java.lang.String`	`getAssignment()` Get the assignment string of this attribute.
`void`	`getAssignment(java.lang.StringBuffer buffer)` Get the assignment string of this attribute.
`int`	`getLength()` Get the length of the string value of this attribute.
`java.lang.String`	`getName()` Get the name of this attribute.
`void`	`getName(java.lang.StringBuffer buffer)` Get the name of this attribute.
`int`	`getNameEndPosition()` Get the ending position of the attribute name.
`int`	`getNameStartPosition()` Get the starting position of the attribute name.
`Page`	`getPage()` Get the page this attribute is anchored to, if any.
`java.lang.String`	`getRawValue()` Get the raw value of the attribute.
`void`	`getRawValue(java.lang.StringBuffer buffer)` Get the raw value of the attribute.
`java.lang.String`	`getValue()` Get the value of the attribute.
`void`	`getValue(java.lang.StringBuffer buffer)` Get the value of the attribute.
`int`	`getValueEndPosition()` Get the ending position of the attribute value.
`int`	`getValueStartPosition()` Get the starting position of the attribute value.
`boolean`	`isEmpty()` Predicate to determine if this attribute has an equals sign but no value.
`boolean`	`isStandAlone()` Predicate to determine if this attribute has no equals sign (or value).
`boolean`	`isValued()` Predicate to determine if this attribute has a value.
`boolean`	`isWhitespace()` Predicate to determine if this attribute is whitespace.
`void`	`setNameEndPosition(int end)` Set the ending position of the attribute name.
`void`	`setNameStartPosition(int start)` Set the starting position of the attribute name.
`void`	`setPage(Page page)` Set the page this attribute is anchored to.
`void`	`setValueEndPosition(int end)` Set the ending position of the attribute value.
`void`	`setValueStartPosition(int start)` Set the starting position of the attribute value.

从类继承的方法 org.htmlparser.Attribute
getQuote, getQuote, setAssignment, setName, setQuote, setRawValue, setValue, toString, toString

从类继承的方法 java.lang.Object
equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

- 构造器详细资料
  - PageAttribute
```
public PageAttribute(Page page,
                     int name_start,
                     int name_end,
                     int value_start,
                     int value_end,
                     char quote)
```
    Create an attribute.
    
    参数:
    
    page - The page containing the attribute.
    
    name_start - The starting offset of the name within the page. If this is negative, the name is considered null.
    
    name_end - The ending offset of the name within the page.
    
    value_start - he starting offset of the value within the page. If this is negative, the value is considered null.
    
    value_end - The ending offset of the value within the page.
    
    quote - The quote, if any, surrounding the value of the attribute, (i.e. ' or "), or zero if none.
  - PageAttribute
```
public PageAttribute(java.lang.String name,
                     java.lang.String assignment,
                     java.lang.String value,
                     char quote)
```
    Create an attribute with the name, assignment string, value and quote given. If the quote value is zero, assigns the value using Attribute.setRawValue(java.lang.String) which sets the quote character to a proper value if necessary.
    
    参数:
    
    name - The name of this attribute.
    
    assignment - The assignment string of this attribute.
    
    value - The value of this attribute.
    
    quote - The quote around the value of this attribute.
  - PageAttribute
```
public PageAttribute(java.lang.String name,
                     java.lang.String value,
                     char quote)
```
    Create an attribute with the name, value and quote given. Uses an equals sign as the assignment string if the value is not null, and calls Attribute.setRawValue(java.lang.String) to get the correct quoting if quote is zero.
    
    参数:
    
    name - The name of this attribute.
    
    value - The value of this attribute.
    
    quote - The quote around the value of this attribute.
  - PageAttribute
```
public PageAttribute(java.lang.String value)
              throws java.lang.IllegalArgumentException
```
    Create a whitespace attribute with the value given.
    
    参数:
    
    value - The value of this attribute.
    
    抛出:
    
    java.lang.IllegalArgumentException - if the value contains other than whitespace. To set a real value use PageAttribute(String,String).
  - PageAttribute
```
public PageAttribute(java.lang.String name,
                     java.lang.String value)
```
    Create an attribute with the name and value given. Uses an equals sign as the assignment string if the value is not null, and calls Attribute.setRawValue(java.lang.String) to get the correct quoting.
    
    参数:
    
    name - The name of this attribute.
    
    value - The value of this attribute.
  - PageAttribute
```
public PageAttribute(java.lang.String name,
                     java.lang.String assignment,
                     java.lang.String value)
```
    Create an attribute with the name, assignment string and value given. Calls Attribute.setRawValue(java.lang.String) to get the correct quoting.
    
    参数:
    
    name - The name of this attribute.
    
    assignment - The assignment string of this attribute.
    
    value - The value of this attribute.
  - PageAttribute
```
public PageAttribute()
```
    Create an empty attribute. This will provide "" from the Attribute.toString() and Attribute.toString(StringBuffer) methods.
- 方法详细资料
  - getName
```
public java.lang.String getName()
```
    Get the name of this attribute. The part before the equals sign, or the contents of the stand-alone attribute.
    
    覆盖:
    
    getName 在类中 Attribute
    
    返回:
    
    The name, or null if it's just a whitepace 'attribute'.
    
    另请参阅:
    
    Attribute.setName(java.lang.String)
  - getName
```
public void getName(java.lang.StringBuffer buffer)
```
    Get the name of this attribute.
    
    覆盖:
    
    getName 在类中 Attribute
    
    参数:
    
    buffer - The buffer to place the name in.
    
    另请参阅:
    
    getName()
  - getAssignment
```
public java.lang.String getAssignment()
```
    Get the assignment string of this attribute. This is usually just an equals sign, but in poorly formed attributes it can include whitespace on either or both sides of an equals sign.
    
    覆盖:
    
    getAssignment 在类中 Attribute
    
    返回:
    
    The assignment string.
    
    另请参阅:
    
    Attribute.setAssignment(java.lang.String)
  - getAssignment
```
public void getAssignment(java.lang.StringBuffer buffer)
```
    Get the assignment string of this attribute.
    
    覆盖:
    
    getAssignment 在类中 Attribute
    
    参数:
    
    buffer - The buffer to place the assignment string in.
    
    另请参阅:
    
    getAssignment()
  - getValue
```
public java.lang.String getValue()
```
    Get the value of the attribute. The part after the equals sign, or the text if it's just a whitepace 'attribute'. NOTE: This does not include any quotes that may have enclosed the value when it was read. To get the un-stripped value use getRawValue().
    
    覆盖:
    
    getValue 在类中 Attribute
    
    返回:
    
    The value, or null if it's a stand-alone or empty attribute, or the text if it's just a whitepace 'attribute'.
    
    另请参阅:
    
    Attribute.setValue(java.lang.String)
  - getValue
```
public void getValue(java.lang.StringBuffer buffer)
```
    Get the value of the attribute.
    
    覆盖:
    
    getValue 在类中 Attribute
    
    参数:
    
    buffer - The buffer to place the value in.
    
    另请参阅:
    
    getValue()
  - getRawValue
```
public java.lang.String getRawValue()
```
    Get the raw value of the attribute. The part after the equals sign, or the text if it's just a whitepace 'attribute'. This includes the quotes around the value if any.
    
    覆盖:
    
    getRawValue 在类中 Attribute
    
    返回:
    
    The value, or null if it's a stand-alone attribute, or the text if it's just a whitepace 'attribute'.
    
    另请参阅:
    
    Attribute.setRawValue(java.lang.String)
  - getRawValue
```
public void getRawValue(java.lang.StringBuffer buffer)
```
    Get the raw value of the attribute. The part after the equals sign, or the text if it's just a whitepace 'attribute'. This includes the quotes around the value if any.
    
    覆盖:
    
    getRawValue 在类中 Attribute
    
    参数:
    
    buffer - The string buffer to append the attribute value to.
    
    另请参阅:
    
    getRawValue()
  - getPage
```
public Page getPage()
```
    Get the page this attribute is anchored to, if any.
    
    返回:
    
    The page used to construct this attribute, or null if this is just a regular attribute.
  - setPage
```
public void setPage(Page page)
```
    Set the page this attribute is anchored to.
    
    参数:
    
    page - The page to be used to construct this attribute. Note: If you set this you probably also want to uncache the property values by setting them to null.
  - getNameStartPosition
```
public int getNameStartPosition()
```
    Get the starting position of the attribute name.
    
    返回:
    
    The offset into the page at which the name begins.
  - setNameStartPosition
```
public void setNameStartPosition(int start)
```
    Set the starting position of the attribute name.
    
    参数:
    
    start - The new offset into the page at which the name begins.
  - getNameEndPosition
```
public int getNameEndPosition()
```
    Get the ending position of the attribute name.
    
    返回:
    
    The offset into the page at which the name ends.
  - setNameEndPosition
```
public void setNameEndPosition(int end)
```
    Set the ending position of the attribute name.
    
    参数:
    
    end - The new offset into the page at which the name ends.
  - getValueStartPosition
```
public int getValueStartPosition()
```
    Get the starting position of the attribute value.
    
    返回:
    
    The offset into the page at which the value begins.
  - setValueStartPosition
```
public void setValueStartPosition(int start)
```
    Set the starting position of the attribute value.
    
    参数:
    
    start - The new offset into the page at which the value begins.
  - getValueEndPosition
```
public int getValueEndPosition()
```
    Get the ending position of the attribute value.
    
    返回:
    
    The offset into the page at which the value ends.
  - setValueEndPosition
```
public void setValueEndPosition(int end)
```
    Set the ending position of the attribute value.
    
    参数:
    
    end - The new offset into the page at which the value ends.
  - isWhitespace
```
public boolean isWhitespace()
```
    Predicate to determine if this attribute is whitespace.
    
    覆盖:
    
    isWhitespace 在类中 Attribute
    
    返回:
    
    true if this attribute is whitespace, false if it is a real attribute.
  - isStandAlone
```
public boolean isStandAlone()
```
    Predicate to determine if this attribute has no equals sign (or value).
    
    覆盖:
    
    isStandAlone 在类中 Attribute
    
    返回:
    
    true if this attribute is a standalone attribute. false if has an equals sign.
  - isEmpty
```
public boolean isEmpty()
```
    Predicate to determine if this attribute has an equals sign but no value.
    
    覆盖:
    
    isEmpty 在类中 Attribute
    
    返回:
    
    true if this attribute is an empty attribute. false if has an equals sign and a value.
  - isValued
```
public boolean isValued()
```
    Predicate to determine if this attribute has a value.
    
    覆盖:
    
    isValued 在类中 Attribute
    
    返回:
    
    true if this attribute has a value. false if it is empty or standalone.
  - getLength
```
public int getLength()
```
    Get the length of the string value of this attribute.
    
    覆盖:
    
    getLength 在类中 Attribute
    
    返回:
    
    The number of characters required to express this attribute.

类 PageAttribute

构造器概要

方法概要

从类继承的方法 org.htmlparser.Attribute

从类继承的方法 java.lang.Object

构造器详细资料

PageAttribute

PageAttribute

PageAttribute

PageAttribute

PageAttribute

PageAttribute

PageAttribute

方法详细资料

getName

getName

getAssignment

getAssignment

getValue

getValue

getRawValue

getRawValue

getPage

setPage

getNameStartPosition

setNameStartPosition

getNameEndPosition

setNameEndPosition

getValueStartPosition

setValueStartPosition

getValueEndPosition

setValueEndPosition

isWhitespace

isStandAlone

isEmpty

isValued

getLength