java.lang.Object
- org.springframework.web.portlet.bind.PortletRequestUtils

```
public abstract class PortletRequestUtils
extends Object
```
Parameter extraction methods, for an approach distinct from data binding, in which parameters of specific types are required.
This approach is very useful for simple submissions, where binding request parameters to a command object would be overkill.
从以下版本开始:
2.0
作者:
Juergen Hoeller, Keith Donald, John A. Lewis

构造器概要
构造器
构造器说明
PortletRequestUtils()

方法概要

所有方法静态方法具体方法
修饰符和类型	方法	说明
`static Boolean`	`getBooleanParameter(PortletRequest request, String name)`	Get a Boolean parameter, or `null` if not present.
`static boolean`	`getBooleanParameter(PortletRequest request, String name, boolean defaultVal)`	Get a boolean parameter, with a fallback value.
`static boolean[]`	`getBooleanParameters(PortletRequest request, String name)`	Get an array of boolean parameters, return an empty array if not found.
`static Double`	`getDoubleParameter(PortletRequest request, String name)`	Get a Double parameter, or `null` if not present.
`static double`	`getDoubleParameter(PortletRequest request, String name, double defaultVal)`	Get a double parameter, with a fallback value.
`static double[]`	`getDoubleParameters(PortletRequest request, String name)`	Get an array of double parameters, return an empty array if not found.
`static Float`	`getFloatParameter(PortletRequest request, String name)`	Get a Float parameter, or `null` if not present.
`static float`	`getFloatParameter(PortletRequest request, String name, float defaultVal)`	Get a float parameter, with a fallback value.
`static float[]`	`getFloatParameters(PortletRequest request, String name)`	Get an array of float parameters, return an empty array if not found.
`static Integer`	`getIntParameter(PortletRequest request, String name)`	Get an Integer parameter, or `null` if not present.
`static int`	`getIntParameter(PortletRequest request, String name, int defaultVal)`	Get an int parameter, with a fallback value.
`static int[]`	`getIntParameters(PortletRequest request, String name)`	Get an array of int parameters, return an empty array if not found.
`static Long`	`getLongParameter(PortletRequest request, String name)`	Get a Long parameter, or `null` if not present.
`static long`	`getLongParameter(PortletRequest request, String name, long defaultVal)`	Get a long parameter, with a fallback value.
`static long[]`	`getLongParameters(PortletRequest request, String name)`	Get an array of long parameters, return an empty array if not found.
`static boolean`	`getRequiredBooleanParameter(PortletRequest request, String name)`	Get a boolean parameter, throwing an exception if it isn't found or isn't a boolean.
`static boolean[]`	`getRequiredBooleanParameters(PortletRequest request, String name)`	Get an array of boolean parameters, throwing an exception if not found or one isn't a boolean.
`static double`	`getRequiredDoubleParameter(PortletRequest request, String name)`	Get a double parameter, throwing an exception if it isn't found or isn't a number.
`static double[]`	`getRequiredDoubleParameters(PortletRequest request, String name)`	Get an array of double parameters, throwing an exception if not found or one is not a number.
`static float`	`getRequiredFloatParameter(PortletRequest request, String name)`	Get a float parameter, throwing an exception if it isn't found or isn't a number.
`static float[]`	`getRequiredFloatParameters(PortletRequest request, String name)`	Get an array of float parameters, throwing an exception if not found or one is not a number.
`static int`	`getRequiredIntParameter(PortletRequest request, String name)`	Get an int parameter, throwing an exception if it isn't found or isn't a number.
`static int[]`	`getRequiredIntParameters(PortletRequest request, String name)`	Get an array of int parameters, throwing an exception if not found or one is not a number..
`static long`	`getRequiredLongParameter(PortletRequest request, String name)`	Get a long parameter, throwing an exception if it isn't found or isn't a number.
`static long[]`	`getRequiredLongParameters(PortletRequest request, String name)`	Get an array of long parameters, throwing an exception if not found or one is not a number.
`static String`	`getRequiredStringParameter(PortletRequest request, String name)`	Get a String parameter, throwing an exception if it isn't found or is empty.
`static String[]`	`getRequiredStringParameters(PortletRequest request, String name)`	Get an array of String parameters, throwing an exception if not found or one is empty.
`static String`	`getStringParameter(PortletRequest request, String name)`	Get a String parameter, or `null` if not present.
`static String`	`getStringParameter(PortletRequest request, String name, String defaultVal)`	Get a String parameter, with a fallback value.
`static String[]`	`getStringParameters(PortletRequest request, String name)`	Get an array of String parameters, return an empty array if not found.

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

- 构造器详细资料
  - PortletRequestUtils
```
public PortletRequestUtils()
```
- 方法详细资料
  - getIntParameter
```
public static Integer getIntParameter(PortletRequest request,
                                      String name)
                               throws PortletRequestBindingException
```
    Get an Integer parameter, or null if not present. Throws an exception if it the parameter value isn't a number.
    参数:
    request - current portlet request
    name - the name of the parameter
    返回:
    the Integer value, or null if not present
    抛出:
    PortletRequestBindingException - a subclass of PortletException, so it doesn't need to be caught
  - getIntParameter
```
public static int getIntParameter(PortletRequest request,
                                  String name,
                                  int defaultVal)
```
    Get an int parameter, with a fallback value. Never throws an exception. Can pass a distinguished value as default to enable checks of whether it was supplied.
    参数:
    request - current portlet request
    name - the name of the parameter
    defaultVal - the default value to use as fallback
  - getIntParameters
```
public static int[] getIntParameters(PortletRequest request,
                                     String name)
```
    Get an array of int parameters, return an empty array if not found.
    参数:
    request - current portlet request
    name - the name of the parameter with multiple possible values
  - getRequiredIntParameter
```
public static int getRequiredIntParameter(PortletRequest request,
                                          String name)
                                   throws PortletRequestBindingException
```
    Get an int parameter, throwing an exception if it isn't found or isn't a number.
    参数:
    request - current portlet request
    name - the name of the parameter
    抛出:
    PortletRequestBindingException - a subclass of PortletException, so it doesn't need to be caught
  - getRequiredIntParameters
```
public static int[] getRequiredIntParameters(PortletRequest request,
                                             String name)
                                      throws PortletRequestBindingException
```
    Get an array of int parameters, throwing an exception if not found or one is not a number..
    参数:
    request - current portlet request
    name - the name of the parameter with multiple possible values
    抛出:
    PortletRequestBindingException - a subclass of PortletException, so it doesn't need to be caught
  - getLongParameter
```
public static Long getLongParameter(PortletRequest request,
                                    String name)
                             throws PortletRequestBindingException
```
    Get a Long parameter, or null if not present. Throws an exception if it the parameter value isn't a number.
    参数:
    request - current portlet request
    name - the name of the parameter
    返回:
    the Long value, or null if not present
    抛出:
    PortletRequestBindingException - a subclass of PortletException, so it doesn't need to be caught
  - getLongParameter
```
public static long getLongParameter(PortletRequest request,
                                    String name,
                                    long defaultVal)
```
    Get a long parameter, with a fallback value. Never throws an exception. Can pass a distinguished value as default to enable checks of whether it was supplied.
    参数:
    request - current portlet request
    name - the name of the parameter
    defaultVal - the default value to use as fallback
  - getLongParameters
```
public static long[] getLongParameters(PortletRequest request,
                                       String name)
```
    Get an array of long parameters, return an empty array if not found.
    参数:
    request - current portlet request
    name - the name of the parameter with multiple possible values
  - getRequiredLongParameter
```
public static long getRequiredLongParameter(PortletRequest request,
                                            String name)
                                     throws PortletRequestBindingException
```
    Get a long parameter, throwing an exception if it isn't found or isn't a number.
    参数:
    request - current portlet request
    name - the name of the parameter
    抛出:
    PortletRequestBindingException - a subclass of PortletException, so it doesn't need to be caught
  - getRequiredLongParameters
```
public static long[] getRequiredLongParameters(PortletRequest request,
                                               String name)
                                        throws PortletRequestBindingException
```
    Get an array of long parameters, throwing an exception if not found or one is not a number.
    参数:
    request - current portlet request
    name - the name of the parameter with multiple possible values
    抛出:
    PortletRequestBindingException - a subclass of PortletException, so it doesn't need to be caught
  - getFloatParameter
```
public static Float getFloatParameter(PortletRequest request,
                                      String name)
                               throws PortletRequestBindingException
```
    Get a Float parameter, or null if not present. Throws an exception if it the parameter value isn't a number.
    参数:
    request - current portlet request
    name - the name of the parameter
    返回:
    the Float value, or null if not present
    抛出:
    PortletRequestBindingException - a subclass of PortletException, so it doesn't need to be caught
  - getFloatParameter
```
public static float getFloatParameter(PortletRequest request,
                                      String name,
                                      float defaultVal)
```
    Get a float parameter, with a fallback value. Never throws an exception. Can pass a distinguished value as default to enable checks of whether it was supplied.
    参数:
    request - current portlet request
    name - the name of the parameter
    defaultVal - the default value to use as fallback
  - getFloatParameters
```
public static float[] getFloatParameters(PortletRequest request,
                                         String name)
```
    Get an array of float parameters, return an empty array if not found.
    参数:
    request - current portlet request
    name - the name of the parameter with multiple possible values
  - getRequiredFloatParameter
```
public static float getRequiredFloatParameter(PortletRequest request,
                                              String name)
                                       throws PortletRequestBindingException
```
    Get a float parameter, throwing an exception if it isn't found or isn't a number.
    参数:
    request - current portlet request
    name - the name of the parameter
    抛出:
    PortletRequestBindingException - a subclass of PortletException, so it doesn't need to be caught
  - getRequiredFloatParameters
```
public static float[] getRequiredFloatParameters(PortletRequest request,
                                                 String name)
                                          throws PortletRequestBindingException
```
    Get an array of float parameters, throwing an exception if not found or one is not a number.
    参数:
    request - current portlet request
    name - the name of the parameter with multiple possible values
    抛出:
    PortletRequestBindingException - a subclass of PortletException, so it doesn't need to be caught
  - getDoubleParameter
```
public static Double getDoubleParameter(PortletRequest request,
                                        String name)
                                 throws PortletRequestBindingException
```
    Get a Double parameter, or null if not present. Throws an exception if it the parameter value isn't a number.
    参数:
    request - current portlet request
    name - the name of the parameter
    返回:
    the Double value, or null if not present
    抛出:
    PortletRequestBindingException - a subclass of PortletException, so it doesn't need to be caught
  - getDoubleParameter
```
public static double getDoubleParameter(PortletRequest request,
                                        String name,
                                        double defaultVal)
```
    Get a double parameter, with a fallback value. Never throws an exception. Can pass a distinguished value as default to enable checks of whether it was supplied.
    参数:
    request - current portlet request
    name - the name of the parameter
    defaultVal - the default value to use as fallback
  - getDoubleParameters
```
public static double[] getDoubleParameters(PortletRequest request,
                                           String name)
```
    Get an array of double parameters, return an empty array if not found.
    参数:
    request - current portlet request
    name - the name of the parameter with multiple possible values
  - getRequiredDoubleParameter
```
public static double getRequiredDoubleParameter(PortletRequest request,
                                                String name)
                                         throws PortletRequestBindingException
```
    Get a double parameter, throwing an exception if it isn't found or isn't a number.
    参数:
    request - current portlet request
    name - the name of the parameter
    抛出:
    PortletRequestBindingException - a subclass of PortletException, so it doesn't need to be caught
  - getRequiredDoubleParameters
```
public static double[] getRequiredDoubleParameters(PortletRequest request,
                                                   String name)
                                            throws PortletRequestBindingException
```
    Get an array of double parameters, throwing an exception if not found or one is not a number.
    参数:
    request - current portlet request
    name - the name of the parameter with multiple possible values
    抛出:
    PortletRequestBindingException - a subclass of PortletException, so it doesn't need to be caught
  - getBooleanParameter
```
public static Boolean getBooleanParameter(PortletRequest request,
                                          String name)
                                   throws PortletRequestBindingException
```
    Get a Boolean parameter, or null if not present. Throws an exception if it the parameter value isn't a boolean.
    Accepts "true", "on", "yes" (any case) and "1" as values for true; treats every other non-empty value as false (i.e. parses leniently).
    参数:
    request - current portlet request
    name - the name of the parameter
    返回:
    the Boolean value, or null if not present
    抛出:
    PortletRequestBindingException - a subclass of PortletException, so it doesn't need to be caught
  - getBooleanParameter
```
public static boolean getBooleanParameter(PortletRequest request,
                                          String name,
                                          boolean defaultVal)
```
    Get a boolean parameter, with a fallback value. Never throws an exception. Can pass a distinguished value as default to enable checks of whether it was supplied.
    Accepts "true", "on", "yes" (any case) and "1" as values for true; treats every other non-empty value as false (i.e. parses leniently).
    参数:
    request - current portlet request
    name - the name of the parameter
    defaultVal - the default value to use as fallback
  - getBooleanParameters
```
public static boolean[] getBooleanParameters(PortletRequest request,
                                             String name)
```
    Get an array of boolean parameters, return an empty array if not found.
    Accepts "true", "on", "yes" (any case) and "1" as values for true; treats every other non-empty value as false (i.e. parses leniently).
    参数:
    request - current portlet request
    name - the name of the parameter with multiple possible values
  - getRequiredBooleanParameter
```
public static boolean getRequiredBooleanParameter(PortletRequest request,
                                                  String name)
                                           throws PortletRequestBindingException
```
    Get a boolean parameter, throwing an exception if it isn't found or isn't a boolean.
    Accepts "true", "on", "yes" (any case) and "1" as values for true; treats every other non-empty value as false (i.e. parses leniently).
    参数:
    request - current portlet request
    name - the name of the parameter
    抛出:
    PortletRequestBindingException - a subclass of PortletException, so it doesn't need to be caught
  - getRequiredBooleanParameters
```
public static boolean[] getRequiredBooleanParameters(PortletRequest request,
                                                     String name)
                                              throws PortletRequestBindingException
```
    Get an array of boolean parameters, throwing an exception if not found or one isn't a boolean.
    Accepts "true", "on", "yes" (any case) and "1" as values for true; treats every other non-empty value as false (i.e. parses leniently).
    参数:
    request - current portlet request
    name - the name of the parameter
    抛出:
    PortletRequestBindingException - a subclass of PortletException, so it doesn't need to be caught
  - getStringParameter
```
public static String getStringParameter(PortletRequest request,
                                        String name)
                                 throws PortletRequestBindingException
```
    Get a String parameter, or null if not present. Throws an exception if it the parameter value is empty.
    参数:
    request - current portlet request
    name - the name of the parameter
    返回:
    the String value, or null if not present
    抛出:
    PortletRequestBindingException - a subclass of PortletException, so it doesn't need to be caught
  - getStringParameter
```
public static String getStringParameter(PortletRequest request,
                                        String name,
                                        String defaultVal)
```
    Get a String parameter, with a fallback value. Never throws an exception. Can pass a distinguished value to default to enable checks of whether it was supplied.
    参数:
    request - current portlet request
    name - the name of the parameter
    defaultVal - the default value to use as fallback
  - getStringParameters
```
public static String[] getStringParameters(PortletRequest request,
                                           String name)
```
    Get an array of String parameters, return an empty array if not found.
    参数:
    request - current portlet request
    name - the name of the parameter with multiple possible values
  - getRequiredStringParameter
```
public static String getRequiredStringParameter(PortletRequest request,
                                                String name)
                                         throws PortletRequestBindingException
```
    Get a String parameter, throwing an exception if it isn't found or is empty.
    参数:
    request - current portlet request
    name - the name of the parameter
    抛出:
    PortletRequestBindingException - a subclass of PortletException, so it doesn't need to be caught
  - getRequiredStringParameters
```
public static String[] getRequiredStringParameters(PortletRequest request,
                                                   String name)
                                            throws PortletRequestBindingException
```
    Get an array of String parameters, throwing an exception if not found or one is empty.
    参数:
    request - current portlet request
    name - the name of the parameter
    抛出:
    PortletRequestBindingException - a subclass of PortletException, so it doesn't need to be caught

类 PortletRequestUtils

构造器概要

方法概要

从类继承的方法 java.lang.Object

构造器详细资料

PortletRequestUtils

方法详细资料

getIntParameter

getIntParameter

getIntParameters

getRequiredIntParameter

getRequiredIntParameters

getLongParameter

getLongParameter

getLongParameters

getRequiredLongParameter

getRequiredLongParameters

getFloatParameter

getFloatParameter

getFloatParameters

getRequiredFloatParameter

getRequiredFloatParameters

getDoubleParameter

getDoubleParameter

getDoubleParameters

getRequiredDoubleParameter

getRequiredDoubleParameters

getBooleanParameter

getBooleanParameter

getBooleanParameters

getRequiredBooleanParameter

getRequiredBooleanParameters

getStringParameter

getStringParameter

getStringParameters

getRequiredStringParameter

getRequiredStringParameters